Chemistry Online

chemistry?!? answer the following briefly. a. where and when did chemistry begin? b. what are the related sciences that make use of chemistry? c. where can a chemist work after graduation? 10 pts. for the best answer.

What is the difference between chemistry and organic chemistry? what is the difference between organic chemistry, and normal chemistry? and do i need to learn normal chemistry first in order to learn organic chemistry?

How is the chemistry for nursing and allied health majors different than the chemistry for science majors? I began college as a biology major. I took chemistry my first semester in college, it was extermly diffucult. Even the brightest kids in the class struggled through it. Average test scores scores for the class rarley left the low C range. Recently I decided to go into nursing, of course chemistry is required for that major also. Im signed on to take it this spring. Wll it be any easier, or just different subject matter???

What chemistry occurs while baking a cake? Also, what chemistry occurs in the human body on a day to day basis, and what chemistry occurs in the car and computer on a day to day basis. Thanks!

How does chemistry apply to being a pharmacist? I'm doing a report for my chemistry class, and I'm having trouble finding out specifically how pharmacists used chemistry in their career.

What is the amount of chemistry in the chemical engineering course? I have applied for chemical engineering as my course in several universities. I am very interested in chemistry but I have heard that chemistry is very light in chemical engineering. Is that true? I mean, how light is "light"? Can someone give me a brief overview of the chemistry topics covered in the course?

What is the difference between applied chemistry and pure chemistry? This is supposed to be in my book, but I have no idea. I mean, Applied chemistry and pure chemistry... I had no idea that there were such things. >

What is the best chemistry book for a novice chemist? I am a college graduate (BA) with little science background. I am interested in expanding my knowlege of chemistry, physics, astronomy - all of the exact sciences. I think chemistry is the best place to start a solid foundation. (If I am mistaken, I'm open to suggestions) What are some concise, yet readable books that I should choose?

What field of electrical engineering most relates to chemistry? and how does it relate to chemistry? What field of electrical engineering most relates to chemistry? and how does it relate to chemistry? THANKS!

How does chemistry apply to economics and the commercial importance of chemicals like heterocyclic compounds? I am interested in knowing what is the relation between chemistry and economics. That is aproject given to me by a professor, since I am doing a course in sciences along with a degree in finance. Kindly help.

How is chemistry done in eating bread and drinking water? I really need it! Where is chemistry in chewing the bread and drinking the water?

From a chemistry andor physics point of view. How do you explain pepper repelling from dish soap? You know when you put ground pepper ontop of water in a dish. The pepper floats on top, covering the water. But when you put some dishwater soap on your finger and stick it in the middle of the dish, The pepper moves away from the finger. How do you explain this in terms of chemistry and physics?

How is chemistry related to Light bulb? I have a project and i need to explain in 3-5 sentences that how is chemistry related to light bulb? I gave a thumb up to everyone who answered so thanks, i liked every single answer so its hard to decide which one is the best so i will have to let the people decide that.

What are the chemistry aspects invovled with energy drinks? I've posted earlier polls about applications of chemistry and I decided I would do energy drinks. If anyone can provide information or websites I would be really grateful, thanks!

I have a chemistry project where I have to bring a food in that is a play on the word "mole", any suggestions? In case you want to know a mole in chemistry is a measurment for a substance and each mole of a substance contains about 6.022x10^23 particles. Since tomorow is 10/23 it is national mole day. Sorry I didn't mention this before but, something other than guacamole would be great

How does the chemistry of Cannabis sativa differ from that of the other psychoactive plants? Pretty much as the question asks, there is a difference between most psychoactive drugs, and the chemistry if Cannabis Sativa (marijuana) but what exactly are they?

What is the chemistry of cat urine and how does hydrogen peroxide 3% work to get rid of the odor? I learned (and saw for myself) that hydrogen peroxide 3% plus baking soda and a drop of dish soap are an effective cat urine odor removal tool. What is the chemistry happening here and what am I leaving in my carpet after the reaction has finished and dried?

Who are some of the most important people the history of chemistry? I'm doing an assignment in which I have to write a paper on a single person in chemistry. I have to think how this person's contributions to chemistry have affected society. I basically have to include a biography of their life (birth place, schooling), what they did that was so important to chemistry, and explain (to the best of my ability) the chemistry behind their discovery. Who's a good chemist to write such a paper about? Thanks.

What would be a chemistry project that involved running? I need to come up with a project that deals with a runner listening to music. What would be the chemistry aspect to this?

How do we use chemistry in everyday life? For science, we have to state as many reasons as possible on how chemistry applies to my everyday life. Does anyone have any examples?

What is the chemistry involved with photography? I have a presentation in chemistry on applications of chemistry in the real world. I'd really look to explore the chemistry related aspects of photography so if anyone can provide information on it I would be extremely grateful.

What is the easiest way to learn chemistry? How can I survive Chemistry? Chemistry is the hardest subject I am encountering now in my high school life. Could you give me some pieces of advice how can I pass it without draining my brain? Is there any easy way to learn that horrifying subject?

How do you identify a spectator ion in chemistry reactions? During the break, I read the packet that explains how to solve chemistry reactions (I take AP Chem). I memorized most of the special exceptions and other stuff, but I don't get which are spectator ions. I thought they are ions that are soluble, but I see some soluble ions represented in the equations. Only information about spectator ions I see in this packet is 'Don't omit any ions unless you're absolutely sure that they'll be spectator ions.' So How do you identify a spectator ion in chemistry reactions?

What is the role of Chemistry in the design of pesticides combining max efficiency with min enviro damage? Sorry about the shortening of words... I couldn't fit it in. Te question is written properly below for clarification: What is the role of Chemistry in the design of pesticides that combinine maximum efficiency with minimum environmental damage?

How best to draw organic chemistry structures on the computer? I am trying to put together a PowerPoint presentation that requires some organic chemistry structures. Is there an easy way to do this? Maybe some free software?

What can I do with a major in chemistry and theatre? I am really good at chemistry and biology and physics and math (and this is even in upper-division in college) and I LOVE to perform. I have done some form of performance ever since I was eight. What they heck can I do this? I have no idea what kinds of jobs would let me perform without making all my chemistry studying a waste of time.

What would be a detailed chemistry of the dispersant agents used in cleaning an oil spill? What would be a detailed chemistry of the dispersant agents used in cleaning an oil spill? Please site where you got your information! Thanks!

What are the effects of the application of chemistry on the home/household? What are the effects of the application of chemistry on the home/household? Can anyone please give me some effects chemistry as a science has in our everyday lives? Thanks!

How does chemistry affect your work? I just need your opinions on how chemistry affect your work? or.. is chemistry related to your work? oh please help me.

What is the importance of chemistry at home, in industry and to society? as we all know, chemistry is the study of matter- it's composition structure, properties, transformation from one form to another and the energy that accompanies its transformation. But I can't understand its importance in our home, in industry and in society?

Why is the ability to solve problems important in chemistry? Honors Chemistry homework question...please help: Why is the ability to solve problems important in the study of chemistry? Why is that that the METHOD used to attack a problem is as important as the answer to the problem itself?

What is the difference between forensic chemistry, forensic biology, and forensic science? I'm going to be a senior in September and need help. I want to go to college for forensic but i don't understand the difference between forensic science, forensic biology and forensic chemistry. Can anyone help me? Also, which one should i major in. I loved going to chemistry everyday, i had an A average in that class. I kind of hated biology, I had an B average. I'm taking forensic science at my high school in the fall.

What are good tutor courses for chemistry subject test? I don't have time to take the official chemistry course in school, so this is my only option to prepare. Also what books are good to use?

Is Biology more important than Chemistry for someone studying to be a doctor? I was given Chemistry SL for next year, but the thing is I am not that good at Chemistry. I passed with an 80 average. I have the choice to switch with someone for Biology SL, (which I had a 90 average) , and I am not sure if I should switch. I plan on being a radiologist, and so i would like to know, which is a better course? Chemistry or Biology?

For Those Who have taken Organic Chemistry and Physical Chemistry in College, which is harder? I have just taken my Organic Chemistry Final Exam. After two semesters of organic chemistry, I have to say this is the hardest class I have taken because of the volume of information that I have to memorize. I have already scheduled Physical Chemistry for the fall semester, and I am asking those who have taken both Physical Chemistry and Organic Chemistry in college. Which is harder, and...how much harder is it than the other? Should the blood the sweat I poured into Organic Chemistry help me in Physical Chemistry?, or will I be in for a rude awakening?

What should i do for a chemistry project? Hi. I need to come up with a project for my chemistry class. I'm looking for some good ideas, on topics that would be easy to research + full of information and interesting. I would like it to be a written paper, on one topic, like last time i wrote a paper on Weapons Of mass distruction. How they are made and what not.. Best idea will recive 10 points. Thanks.

What are some of the best colleges and universities for chemistry? I was just wondering what colleges are the best in the United States for chemistry. I have thought of being a chemist for a while and decided thats what I would like to do. If I can get a link or a list of the best colleges for chemistry that be great. Thank you!

What exactly is a radical in inorganic chemistry? What is meant by a free radical? I am new to chemistry so please make your explanations easy to understand! Any help is appreciated.

What are some chemistry themed desserts for a high school chem class? I have an upcoming end of school party in my chemistry class, and instead of just making brownies or something, I wanted to make a dessert relating to chem in some way. I did something like this for earth science 2 years ago, a jello model of the earth's core. I know there are teaching/school websites that have recipes up so if anyone knows one of those or a recipe idea that would be great!

What are good websites to learn Organic Chemistry? I'm looking for a website that goes in-depth into hardcore Organic Chemistry, but one that can also explain the material in a clear way that's easy to understand and take in. I've looked around, but am open to new suggestions. Anything is helpful! Thanks! I wasn't trying to diss book learning or anything (I have a huge required textbook): I was just trying to find some other way to learn the material. The reason I ask for websites is that they tend to have animations that might be helpful.

How does energy (kinetic and potential) relate to chemistry? How does it relate to atoms and molecules? How do you apply energy to Chemistry? I need help!

How much correlation is there with team chemistry and team success? I think a team that plays as a team is much more successful. Take the Cubs for example... I'll admit they're probably not THE best team on paper (though they are in the top 5 I'd say), but they play extremely well together as a team and when someone makes a mistake another player always seems to be there to pick them up. So the question is, do you think team chemistry plays a huge role in success?

What are some of the fastest-growing careers nowadays for a chemistry major? I am conflicted about what I want to do after I graduate. I am a chemistry undergraduate at MIT. I don't really want to get a PhD in chemistry-- I'd like to go into the world and work, even if it requires going to more school. I'm fine with school... :) Thanks!

What is the easiest way to memorize chemistry formulae? For anybody who did well on the AP chemistry, what is the best method to memorize formulae? And did you really need a lot of formulae and "constants" memorized for the multiple choice part where you only get the periodic table? I understand you get some formulae for the written part.

What is the best way to study for chemistry? I have recently found out that I am failing Chemistry. Its no suprise because im lost in the class. How do i study to pass the next test with a B or higher?

How does photosynthesis relate to topics in chemistry? The title says it all. Please just explain what topics it relates to in chemistry.

Why should I take chemistry and physics to get ready for pilot school? I'm having chemistry right now and I'm hating it and having a hard time with it. Im planning to take pilot school after high school. So why is it important for me to take chemistry and physics to get ready for pilot school???

What is a good book for learning organic chemistry? I have organic chemistry demystified but topics seem out of order and all over the place and the explanations very elementary. I understand the subject but would prefer something that sums up major points.

How would I balance the work from Honors Chemistry and AP Biology? My school is on the 4x4 block schedule and for my junior year, I have Trigonometry, English 3AP, Honors Chemistry, and Bioloogy AP the first semester. The following semester I have Pre-calculus, US History, Anatomy and Physiology AP, and Spanish 3(H). I am really good at math and science, so they won't be a problem, but what are some study tips so that I can get an A? What did you do to get an A and can you explain some of your experiences. Thanks in advance.

What is the best Chemistry textbook to buy? Hi! I have been looking at several chemistry textbooks for self-learning. I so far am interested in Chang's books and Kotz and Treichel's work. However, I still can't decide! Can you tell me what you think is the best chemistry textbook to use (include edition, please.) Thank you!

What type of entry level chemistry jobs in canada? I'll be graduating in chemistry next april and want to know what kind of jobs are available in the entry level position? Also where in canada (province/city) are they found? If you know any companies that would be great too.

Any good chemistry books with aplicattions on other sciences and daily life only? So I own a few chemsitry books and they all make interludes in various chapters to explain how the concepts being taught affect daily live and other sciences. For example: >Photography, Redox reactions, McMurry Chemistry >Thermodynamics. Firewalking: Magic or science? Zumdalh Chemical Principles >Quantum Theory, Lasers and CD. Ebbing Gammon General Chemistry I want to know if theres a book that is just about Chemistry and its different aplicattions.

How hard is honors chemistry compared to honors biology in high school? - If you think one is easier tell me why!! - I'm average at math, am I still going to fair well in honors chemistry next year? Thanks.

What is a good equillibrium chemistry problem for a college level quiz? Anyone have any good problems from your college chemistry tests you would like to share please?

Chemistry? I have few problems with my studies on Chemistry. Are there any good sites for A/L Chemistry, Physiscs and Mathematics?

What is a synthesis reaction in chemistry terms? I am doing GCSE chemistry. There is a question that simply states: What is a synthesis reaction?

What are some applications of nuclear chemistry? Hi, I need to do a project on applications of nuclear chemistry but i need to chose one application first.. some ideas? no im not kiddin. Nuclear weapons are just one of the many nuclear chemistry fields... i knew that one, but im looking for more options to work with.

How long does it take to major in chemistry? So how long? I am a junior in high school and I am planning to major in chemistry. Also, is it true that it's hard to get into pharmacy school?

How can I find a way to rate and compare other schools chemistry programs? Hey, I am thinking of majoring in Chemistry. But I don't know how to find out which school I want to go. Could someone point me in the direction to compare the programs at schools like the Cal States?

How valuable is a PhD versus a Masters in Chemistry for Law School? I am currently working on my PhD in chemistry and I am planning to go to law school afterwards to get my law degree to eventually work in patent law. Is it worth the extra 2-3 years to get my PhD before I move on to law school or would a Masters degree get me the same job? Thanks

How important are thermodynamics and chemical kinetics to a Chemistry degree? I am struggling with both at Level 2. It is a open university degree, therefore I am learning from a book, the concepts aren't really sinking in. If I continued with Chemistry, will this lack of understanding be an obstacle or can study potentially be veered away from these concepts?

How does chemistry work to keep the environment safe? What are five ways that chemistry works to keep the environment safe?

How can I avoid taking chemistry classes in college? I'm looking at a few options, and I'm interested in dermatology, as well as pharmacy, and nursing. If I choose a medical field, how can I avoid chemistry?? Me and chemistry dont do well together. I failed it twice in high school! Do I have any other options or should I just look into another field?

What is a good topic for a high school chemistry report? I need a topic to write a 2-page report in Chemistry. I am only a Junior in High School. But I need help in deciding what to topic to choose.

How can I send mail to every high school chemistry class in the country? I have an product that I would like to inform high school chemistry teachers about. Where could I get a mailing list or get a firm to do this?

How much overlapping is there in a biology and chemistry double major? How many units,credits, or classes are being overlapped by doing a double major in Biology and Chemistry.

How does chemistry relate to cosmetology? I am doing a chemistry project and I was wondering if anyone had any advice or tips pertaining to my topic (the above question). Anything at all would help. I need to make a science fair type presentation and I was wondering if anyone had any ideas about how to organize it. I'm just asking for ideas because I am having a major mental block. Anything at all would help. If you have ideas, books, websites, people to contact, makeup companies to contact, or anything at all, please let me know. I would immensely appreciate any help at all!! Thank you in advance!!!!!

Chemistry....? I know this is a strange question but for some reason I feel connected to Chemistry because of what complication it has. I am new to this (completely) but I have a strange attraction to learn it. I like how Chemistry works such as formulas and Chemicals rather than making colors or fumes. I know basic chemistry but i am only in the 9th grade. I go to a community college for a program and I want to hear your responses on this. Should I try it or something I should steer clear from? How did you find out Chemistry and why did you choose to stick with it? Please leave me comments because his is something that is new and i want to find out more about it. I will bring additional information if you need it. Thanks for reading!

Chemistry? What is a good question for my chemistry class. My project is about making up a good related chemistry topic. for example cleaning the air how can we do it?

Chemistry??? I know a woman who I do really get on with. We have a laugh and a joke and the chemistry is definatly there. On the odd occasion she has touched me to emphasise a point. Nothing sexual I must add. However when she touches me I go in all goose pimples. I have heard that this is a sign that the chemistry is there. Is this true? Or is it just a weird thing that happens to my body? I do love her very much and she knows this. Any help appreciated.

Chemistry? what does it mean whean someone says "you to have chemistry" or "we have chemistry"??? plz let me now! thnksz =]

Chemistry? Why is Chemistry so broad these days? It is too much to learn everything in my last year of Secondary School that I simply get tired of it sometimes! To me, I find learning all of the Chromatograhic and Spectroscopic instruments difficult to remember, and calculations in Gravimetric and Volumetric Analysis as well as determining possible errors very repetitive, and very often I wish I could just finish the year already! What caused Chemistry to be so damn broad?

Chemistry? what does it mean whean someone says "you to have chemistry" or "we have chemistry"??? plz let me now! thnksz =]

chemistry? is there a site that help me to understand further chemistry subject or a site that have a tutorial for chemistry problems like le chatelier ph and poh

chemistry!!!!!!? ok i have honors chemistry any good website that helps me in chemistry.

[♥] Chemistry? What is the basics of having good chemistry with a guy? What does it feel like? Why does my chemistry always go away? Is it always mutual? Thanks muchh♥

Chemistry? When asking is chemistry completely reducible to principles derived from physics? Wouldn't it be the other way around due to the fact that physics is built upon chemistry?

Chemistry? We want to take a field trip in Chemistry Class but we need a good place to go in Missouri close to St. Louis that has something to do with Chemistry.

chemistry? im a junior this year and will be taking chemistry,and i am very nervous about this!!I did OK in algebra i forgot a few things but im sure they'll come back to me.What i am worried about is last year i barely passed biology (because i hate it!!)and didnt really pay that much attention...so is chemistry going to be even more difficult for me?

chemistry???????? ok i know this guy and his is super cute and i have a great time with him,but i want to know if i like him or is just chemistry. how can you know when is love or just the chemistry.

Chemistry? I don't get chemistry at all and would appreciate your help. 1.) If 4.50 mol of ethane, C2H6, undergo combustion according to C2H6+O2>Co2+H2O, how many moles of oxygen are required? (I would like to know how to solve this problem) b.) how many moles of each product are formed? 2.) Sodium Chloride is produced from its elements through a synthesis reaction. What mass of each reactant would be required to produce 25.0 mol of sodium chloride? 3.) If 4.50 mol of silver nitrate reacts, what mass of sodium bromide is required? b.) What mass of silver bromide is formed? 4.) If 2.25 g of silver are produced from the reaction, how many moles of copper(II) nitrate are also produced? b.) How many moles of each reactant are required in this reaction?

CHeMistry =[? 1. Express the weight of 32 grams of oxygen in milligrams, in kilograms and in pounds. 2. The Color of light depends on its wavelength. The longest visible rays, at the red end of the visible spectrum are 0.000078 cm. in length. Express the length in microns and in angstroms. 3. Air weight about lbs. per cubic feet. What is its density in grams per cubic feet and grams per litter? 4. A specific gravity bottle weight 220 grams when empty, 380 grams when filled with water, and 351 grams when filled with kerosene. Find the specific gravity of kerosene and the capacity of bottle. 5. Calculate the density and specific gravity of a body that weighs 420 grams and has a volume of 52 cc. 6. The density of zinc is 455 lb per cubic foot. Find the specific gravity of zinc and the weight of a 9 cc of Zn. Can anyone help me, i realy suck in chemistry. i still have many here 100 question to answer in 1 day but i answered 40% but this question left is quite hard. pls show me formu

chemistry? what ia a mole and how is the mole used in chemistry?

Chemistry......!!!? If your chemistry grade is broken down so that 70% of it is based on exams, 20% on lab reports, and 10% on homework, and your average scores are exams: 85 labs: 75 homework: 96 what would the average (weighted average) be? please show how you did if if you answer this question. THanks!!

Chemistry...? Does anybody know of a good website where i could study for a high school chemistry test?

Chemistry...? I have A's in all my classes except Chemistry, in which I have a C- I try really hard but I can't quite get the concept and my teacher isn't much help because more than a few minutes of questions will lead to him scoffing me off, despite my attempts to keep inquiring. I recently got a miserable F on a test and with only one month left in school I'm worried about my grade...being a freshmen does this really apply to me? or am i just overreacting?

chemistry? how would you describe chemistry!? and how wuld u describe 3 particles that make up an atom. give their mass change and location!?

Chemistry.....? One of my good guy friends is always grabbing my sides, legs and back when he's joking around. He grabs my hand a lot and when he does I feel a "connection" or "chemistry" it may sound cheesy, I know, but do you think he could feel it too?

Chemistry??? In chemistry, we are learning bonding and I want to know the meaning of bonding sites and an example. Help please?

chemistry????????????? what are the 5 matters of the each chemistry states 1 solid 2 liquid 3 gas i need five things that descirbe only those three

chemistry?? when you are in chemistry class...which is the proper way of mixing acid and water..? do you add the water to the acid? or do you add the acid to the water? and why? i've been researching and i have absolutely no clue which one it is. anyone have any good sites...or would just like to answer? =D

chemistry......? how to ace chemistry???? any websites that have notes or tutorials? i am taking o levels not a levels

Chemistry ??? Working on my chemistry this morning, and got stumped by this question. I worked it out but my answer was wrong. Question is: A sodium chloride solution with a concentration of 73.0 g/L is separated from pure water by an osmotic membrane. What is the osmotic pressure of the salt solution at 25 degrees C? (R=0.082 L-atm/K mol) Any help would be appreciated!

Chemistry?? Why is it when we are near someone we like or have feelings for, when the come close to us or touch us we get all tingly and get butterflies in our stomach. If one person feels this way, do you think there is a strong chance the other person feels this connection? Is this sexual tension or chemistry? Thanks! :)

chemistry?? Hi, I got this in chemistry class on a worksheet about units of measurements. I dont understand the question and what the answer would be. Help!! which temperature scale will you use for your experiments in this class? Is this an SI unit? Thanks in advance!!!!!!!!

CHeMistry =[? 1. Express the weight of 32 grams of oxygen in milligrams, in kilograms and in pounds. 2. The Color of light depends on its wavelength. The longest visible rays, at the red end of the visible spectrum are 0.000078 cm. in length. Express the length in microns and in angstroms. 3. Air weight about lbs. per cubic feet. What is its density in grams per cubic feet and grams per litter? 4. A specific gravity bottle weight 220 grams when empty, 380 grams when filled with water, and 351 grams when filled with kerosene. Find the specific gravity of kerosene and the capacity of bottle. 5. Calculate the density and specific gravity of a body that weighs 420 grams and has a volume of 52 cc. 6. The density of zinc is 455 lb per cubic foot. Find the specific gravity of zinc and the weight of a 9 cc of Zn. Can anyone help me, i realy suck in chemistry. i still have many here 100 question to answer in 1 day but i answered 40% but this question left is quite hard. pls show me formu

Chemistry? Your friend has missed several chemistry classes and that he/she has asked you to help prepare for a stoichiometry test. You cannot meet face to face but you agree to email your friend a point form set of instructions on how to solve stochiometry problems, including those that involving a limiting reagent. Your friend also needs to understand the concept of percentage yield Write the text for the email.

Chemistry...? If a chemistry student collected 834 mL of gas at 25ºC and 8.00 × 10^2 torr, how many moles did she collect?

Chemistry?? I am currently doing chemistry homeowrk and I need help! Can anyone tell me uses for the alkanes; Methane, Ethane and Propane? I've looked on the internet but I cannot seem to find the answer! Thanks! x

Chemistry????? Can some1 explain chemistry between a guy and a girl and does it last forever?

Chemistry....? What are all of the thought processes one engages in when determining the polarity of a covalently-bonded molecule? i need help with some chemistry homework, well, its make up work, and i have only tonight to finish, final grades are due tommorow...so if you can plz help me.

Chemistry? How do you describe chemistry in a relationship? have you been in a relationship in were you felt really attractive to this person physically but eventually found out that he wasn't your type. perhaps didn't like his personality, etc.

chemistry..................................................................................................... How do u know if you have good chemistry with someone what does that mean?

Chemistry!? I need help with a couple Chemistry problems. 4 to be exact, but I will post the seperatley. They are apart of a study guide these are 4 out of 20. I have answered the other 16 but I am struggling with these. I have no idea how to do them. Please help. A 10.0 L steel tank contains propane gas, C3H8 at 10˚C and a pressure of 1,750 mm HG. How many grams of propane are found with in the tank?

Chemistry!? I need help drawing chemistry, in particular sigma bonds etc etc. Say for instance C2H6, or for that matter anything!! How do you go about drawing it? I know that there are 2 Carbons and 6 Hydrogens, put where do you put them etc? Cheers!

Chemistry.? In chemistry, how tdo I determine the order of the reaction? Also, how do I calculate the value of the rate constant?

Chemistry!!!!!!!? OK I need help A.S.A.P!!! I realy need to learn chemistry from beginning of everything!!!!! like from the very bottom all the wayto the top!!! does anyone now any sites??????????? With question and answer and just everything!

Chemistry? I see alot of people are saying that a team like the Rangers are a wait and see because they may not gel and the chemistry may not be there. I say horsecrap, this is not the pre-lock-out Rangers paying ridiculous money on the best FA's out there because they are bringing in CHARACTER guys who lack the big ego's. Drury and Gomez are two-way players who would fit in anywhere, they are clutch winners with great leadership qualities. I just had to get that off my chest. BTW, I don't much care for the Rangers but let's call a spade a spade here and not try to disclaim these pick-ups as the "Rangers being the Rangers" and they have gone through this before and it didn't work. Two totally different beasts. Thoughts?? Puckdat-ahhh, Nylander doesn't fit in anywhere except somewhere like the Isles, Sabres or Oilers. He is an UFA and will not be there.

chemistry.? why is chemistry important?

Chemistry!? I have chemistry exam on 5th.. Can nybudy tell me where to study from and what will help..??

chemistry? Calculate the mass of carbon in grams, the percent carbon by mass, and the number of individual carbon atoms present: a.) 1.53 X 10^21 molecules of carbon monoxide b.) 0.200 mol of phenol, C6H6O ...I'm not sure on how to do these problems or how to set them up, could someone please explain how to work these out?

Chemistry...? Please help me with these problems. Include detailed explantion of how you do it. Thanks in advance. 1) SO 2- 4 (2- is the charge and 4 molecules of oxygen) in a blood plasma sample 2.0 meq/L (meq = milli equivalent). How many sulfate ions are in 1.0 L of blood plasma? 2) How would you make 200 mL of a 0.04M NaCl solution? 3a) Calculate the molar concentration of Ca 2+ in blood plasma with 5.0 meq/L. 3b) How many mg. Ca 2+ are in 1 liter blood plasma?

Chemistry!!!!? You are given a choice of three fuels for use in heating your home-candles, butane, or gasoline. Based on their heats of combustion, which one would you choose and why?

chemistry??? When a 25.7 gram sample of NaI dissolves in 80.0 grams of water in a calorimeter, the temperature rises from 20.5 degrees Celcius to 24.4 degress celcius. Calculate the energy for the process. *10 pts for best answer. please help me. help please!!!! i don't understand this:( pleeeeeeeeeeeeeeeease

Chemistry? Write out a procedure to seperate a mixture of Aluminum, Iron, Sand, and Salt. Can someone help me with this, or better yet tell me the answer. It would mean alot, please and thank you.

Chemistry?? 1. Name 4 thing that can spped up a chemical reaction? And please explain why they increase the rate of reaction ? 2.What is a chemical reaction(what takes place in a chemical reaction?) 3. The substances formed a chemical reaction are____ a. Symbols b. products c. yield

Chemistry ? Gas is a blend of different hydrocarbons (compounds that contain only hydrogen and oxygen). Calculate the volume of carbon dioxide, at 300degreesC and 110kPa, that will pass through the muffler of a car during the combulstion of a full tank (50.0kg) of gasoline. Assume that the chemical formula for gasoline is C7H16. The equation is....... C7H16(l) +11O2(g) = 7CO2(g) + 8H2O(G)

chemistry????? what is the mass of a, electron, proton, nuetron?

Chemistry??? Which of the following statements is (are) true? A. The vapor pressure of 1 m sucrose (C12H22O11) is lower the vapor pressure of 1 m NaCl where the solvent is water. B. The vapor pressure of 0.10 m NaCl is lower than the vapor pressure of 0.05 m MgCl2 assuming the solvent in each case is water. C. The vapor pressure of CO2 is lower than the vapor pressure of water. D. Sea water has a higher vapor pressure than distilled water. E. The vapor pressure of 1 m NaCl is lower than the vapor pressure of 0.5 m KNO3, assuming that the solvent in each case is water. more than one asnwer maximum answers 2

Chemistry??? 1)What is the maximum number of electrons that can be held in a. the first energy level b. the 3rd energy level 2) How many unpaired electrons are there in a. a nitrogen atom b. an iodine atom 3)Which of the following are found as diatomic molecules. a. hydrogen c. sulfur e. oxygen b. sodium d. nitrogen f. phosphorous 4) Explain why that on a hot summer’s day at the beach ,the sand is hotter than the water . 5) A pot of water (2.5 Liters of water) initially at 25.0 degrees C is heated to boiling. How much energy is needed to heat the water? The density of water is 1 g/ml.

chemistry...? 1. When synthesizing a polymer, a condensation reaction is formed by the _____ joining of monomers. 2.The complement to a DNA strand that has a sequence of CGGCTATA is what? It would help out a lot if you guys could answer this and when answering will you only answer if you are positive of your answer please and thankyou!

chemistry? electron configuration for Cu

chemistry? lewis structure for Clo2F ? polarity hybirdization

Chemistry!? 1.What is the pH of 2.4 x 10^-5 M KOH? A.-9.4 B. 4.6 C. 9.4 D. -4.6 2.What is the molarity of HCl with a pH of 3.2? A: .51M B:1585 M C:0.00063 M D:1.6 x 10^-11 M 3.What gas is released when hydrochloric acid (HCl) reacts with magnesium? A: CO2 B: O2 C: CI2 D: H2 4.Properties that describe gases include: A:compressible, very high density, expand to fill the container B:expand to fill a container, more dense than solids or liquids, fixed shape C:very low density, non-compressible, fixed shape D:compressible, expand to fill a container, very low density 5.According to the following chemical equation, if you start with 4 moles of Fe, how many moles of Fe2S3 can you make? 2Fe + 3S → Fe2S3 A: 4 B:2 C:1 D:0.54 6. One mole of H2SO4 would have a mass of: A: 49g B: 98g C: 194g D: 200g 7.An example of a colloidal solution is A:salt water B:dirt mixed with water C:smog 8.What is the pH of 4.5 x 10^-3 M HCl? A:-2.3 B:11.7 C:2.3 D:-11.7 9.Bases feel slippery. neutralize acids. BOTH

chemistry~~~!!!? 1.if you had to categorize elements as homogeneous or heterogeneous, what category would you put them in ? 2.if you had to categorize compounds as homogeneous or heterogeneous, what category would you put them in ? 3.what do organic substances have in common?

Chemistry!? Warning: This is homework! My teacher gave us homework and she told us to make the questions. My group made the questions too ahrd and I'm clueless of the answers except one question. 1. What is the substance formed when NaHCO_3 when mixed with vinegar? 3. What causes zinc to break down when added with copper sulfate? For #1, I think it's a synthesis reaction, but that doesn't help much as to what substance it is. I'm don't even think I can make a guess for #3. Please help. Thanks!

chemistry? For each of the following reactions or processes, predict whether the change in entropy for the system will be positive or negative. If possible, also identify whether the reaction or process is spontaneous or nonspontaneous. Briefly explain your reasoning for each. A. MgCl2(s)--> Mg^2+ (aq) + 2Cl^- (aq) (triangle)H° = -160.0 B. N2O4(g)-->N2O4(l) (triangle)H°= -28.66 kj C. BaCO2(s)--> BaO(s) + CO2(g) (triangle)H° = 269 kj

chemistry !!? what is equivalent weight !!explain

Chemistry? Beer Law Plot: How would I find the molar absorptivity for iron(III)-salicylate complex, 1/M*cm at a wavelength of 530 nm. Also, I just wanted to make sure I have the slope correct; if I would enter all of my concentrations and absorbance info in the calculator and find the linear regression equation that will give me the slope correct.

chemistry!? What is the kinetic energy in joules of a 3747 lb car moving at 35 mph?

Chemistry? What is the formula for figuring this equaion: What is the molarity of a soluion that contains 17.2g of lithium perchlorae, LiClO4,in 2250 ml of solution?

chemistry..................? 1how can you reduce the risk of spills when pouring liquid chemicals? 2why is it important to read labels before mixing chemicals? 3describe the safe way to mix water with acid. 4what should you do with a coin topped stopper after removing it from a bottle? why? 5how can you protect yourself from harmful chemical vapors produced by volatile substances ? 6how can you prevent pure chemicals from harmful chemicals from becoming contaminated?

Chemistry!!? What is nuclear composition?? Also what is activation energy?

Chemistry.? Chemistry.? List 6 chemistry url on formulae, stoichiometry and the mole concept. Thank you.

Chemistry? Okay this is Gas stoichiometry and i need help with two problems. 1. Calculate the volume of oxygen gas at STP that is required to completely react with 2.35 L of propane gas using the following equation( 3 C3H8 + 15O2 -------> 9 CO2 + 12 H20 ) the next question is 2. What mass of ammonia gas can be formed from 17.3 L of H2 at 39.0 celcius and a pressure of .395 atm using the following equation N2(g)+3H2(g)--->2NH3(g). Please help i truley have tried to anwser these questions myself but i cannot figure them out. I need to know how to do them becasue i have a test tommorow.

chemistry? 1. A chemical bond is an attractive _________ that holds atoms together. 2. Chemical bonding is the process of atoms combining to form new ____________. 3. Matter tends to exist in its ________ energy state. 4. A(n) ________ is a bond in which one atom donates electrons to another atom. 5. __________ are atoms with positive or negative charges. 6. ________ is the process of removing electrons from atoms to form ions. 7. Electron _________ is the tendency of an atom to gain electrons when forming bonds. 8. A bond in which atoms share electrons is called a __________ bond. 9. How many valence electrons does the element cesium have? 10. Which has more valence electrons? A. potassium B. oxygen 11. 1.How many valence electrons does the following element have: oxygen 2. Name one element that oxygen would form an ionic bond with.

Chemistry? Determine First order, second order reactions for kinetics

chemistry.................? 14.what should you do if whe flame goes out ? 15how can you check glassware to be sure it is safe before heating it? 16how should you protect your hands when handling hot equipment? 17how should you heat a test ctobe of liquid safely over a burner flame? 18how can you reduce the chances of breaking a thermometer? 19what is the safe way to insert glass tubing into a stopper? 20what is the safe way to operate a centrifuge? 21 describe the safe way to dress for lab. 22describe the safe way to deal with each of these items:long hear,juwelry,contact lenses,cosmetics,food. 23how can you protect your eyes from splashingchemicals? 24waht should you do if a chemical gets in your eyes? 25what should you do with book bays and other personal belongings in the lab? 26what should you do if you cut yourself? 27what should you do if chemicals are spilled on your skin or clothes? 28what should you do to put out a small fire? 29what should you do if your clothes of hair catches fire? 30how should you move around in the lab?

Chemistry? Distinguish between heterogeneous and homogeneous mixtures. How are they dissimilar and how are they alike?

Chemistry...? A solution contains 0.063g of oxalic acid- (H2C2O4 x 2H2O )in 250 mL. What is the molarity? Please show your work so I can understand! Thank You!!

chemistry? 1.0 mol Ar, 3.0x10^24 atoms Ne, 20 g Kr order these in terms of mass from smallest mass to largest.

Chemistry ??? Plz CHange These Equatons to Balanced equations :D 1) P4 + cl2 ------> Pcl5 2) Ba(OH)2 + HBr ----> Ba Br2 + H2O 3) Al + Hcl ------> Al cl3 + H2 4) Pb(No3)2 --------> PbO + NO2 + O2 5) Fe SO4 -------> Fe2 O3+SO2 + SO3

chemistry...? A skull was found and was estimated at 65 million years ago.Although the skull itself was found in a layer of rock that suggests that it is very old and initial carbon-14 dating of the surface revealed a much younger age approx. 8300 years ago suggesting that dinasours roamed th earth when humans did. A. What is the half-life of carbon-14? How is this radioisotope different than carbon-12? B. Carbon-14 a beat emitter forms from the bombardment of nitrogen-14 with a neutron. What is the balanced nuclear equation for the formation and decay of Carbon-14? when answering please make sure you are positive with your answer and thank you to all who answer!

Chemistry? Classify the following equation... C3H7Br + KOH = C3H6 + KBr + H2O

chemistry? Does anyone know how to find the number of moles in 100 g of O3

chemistry? can i have links that shows a brief history of chem... or even better if you'd just place it in your answer.. thank you

chemistry?? What mass of KClO3 must be decomposed to produce 126 L of oxygen gas at 133°C and 0.880 atm? (The other reaction product is solid KCl.) a. 24.6 g b. 70.8 g c. 272 g d. 408 g e. 612 g

chemistry........???? If iron and copper are used to make a cell, what half-reactions will occur? (For Fe2+(aq) + 2e- → Fe(s), E0 = -0.45 V and for Cu2+(aq) + 2e- → Cu(s), E0 = 0.34 V) A. Cu2+(aq) + 2e- → Cu(s) and Fe(s) → Fe2+(aq) + 2e- B. Fe2+(aq) + 2e- → Fe(s) and Cu2+(aq) + 2e- → Cu(s) C. Fe2+(aq) + 2e- → Fe(s) and Cu(s) → Cu2+(aq) + 2e- D. Cu(s) → Cu2+(aq) + 2e- and Fe(s) → Fe2+(aq) + 2e- I think its C but I am unsure of the answer so please help if you can!

chemistry....? How do u know whether a se of atom is increasing or decreasing in size ? I mean How do we know that Ne < F^- < O^2- ultimately due to the same chanrge, they refer to the same element in the Periodic table !

Chemistry? Okay anybody have any suggestions on how to bring my grade up. I'm failing the class and wanna pass but every time i think i'm doing well in the class i fail the hw assignments. I feel stupid asking but have any suggestions? Just to let everyone know i'm at a college prep school, science has never been strong for me but my teacher is just a pain in the butt, none of my other classes aren't this hard and have learning trouble but everyone else i struggling too. ( I think)

Chemistry!!? Iron(III) chloride is reduced by tin(II) chloride. 2 FeCl3(aq) + SnCl2(aq) 2 FeCl2(aq) + SnCl4(aq) The concentration of Fe3+ ion at the beginning of an experiment was 0.03642 M. After 4.00 min, it was 0.02559 M. What is the average rate of reaction of FeCl3 in this time interval? Answer needs to be in M/min

chemistry? if, in the reaction below, of 31 grams of C4H10 produces 41 grams of CO2 what is the % yield? 2C4H10 + 13O2 >> 8CO2 + 10H2O

chemistry....? For an equilibrium that lies far to the reactant-side and has a negative entropy change, which of the following could be true? A. The sign of ΔH° must be negative. B. The sign of ΔG° for the reverse reaction is less than 0. C. The reactant could be a solid and the products could be gases. D. The reactants could be aqueous ions and the product could be a solid. E. The sign of ΔG° for the forward reaction is less than 0. More than one possible answer!

chemistry......? What is the correct balanced redox reaction for the cell shown below? Pt(s) | Cr2+(aq), Cr3+(aq) || Cd2+(aq) | Cd(s) A. Pt(s) + Cr2+(aq) → Cr3+(aq) + Cd(s) B. Cr2+(aq) + Cd2+(aq) → Cd(s) + Cr3+(aq) C. 2Cr2+(aq) + Cd2+(aq) → Cd(s) + 2Cr3+(aq) D. 2Cr3+(aq) + Cd2+(aq) → Cd(s) + 4Cr2+(aq) E. 2Cr2+(aq) + Cd2+(aq) + 2Cr3+(aq) → Cd(s) would somone answer this only if you know the answer please and thankyou!

Chemistry ? The mass of a diamond is measured in carats. If 1 carat = 0.2g , how many carbon atoms are in a 1 carat diamond? A 1.003 x 10^22 B 1.204 x 10^23 C 2.508 x 10^23 D 1.176 x 10^24

Chemistry!!!? I met this guy through a mate of mine about 6 months ago. Since the day we met we get along really really well... we have a local club where we go to every sat night so we will msg eachother askin if we are going/organising how we r getting there etc.... all of our friends think something is going on between us just coz we get long well and seem to understand each other... im 21 he is 23 and the thing is hes got a gf that he has been going out with for 4 years who ia 19 but he doesnt like her coming to the local club because he said he likes to have his time to hang out with his mates...... i dont know what to do i think i might like him but him and his gf have been going out for sooo long!!!

chemistry ??? wat does Cl3C2F3 stand for?

Chemistry? Equation Sodium Metal is add to water What speice is being oxidized what is reducing agent in reaction with some reaction whhich react faster Potassium or Soduim

chemistry .? could someone thoroughly explain cationic & anionic to me. PLEASE ?

chemistry....!? what structural feature for a carbohydrates to have the reducing property?????

Chemistry? Calculate the molality of the following solutions. 23.4 g CaCl2 in 651.9 g H2O find the m. How many grams of solute are contained in the following solutions? 628.6 mL 0.246 M NH4OH. How many grams or (g).

chemistry? explain what is wrong with this statement, "one mole of any substance contains 6.02 x 10 to the 23 power atoms." rewrite the statement to make it correct.

Chemistry...? Give an example of each molecule, containing 4 carbon atoms, which may be described as a.... 1 Ether 2 Aldehyde 3 Acid Chloride Give two examples of common reactions of alkenes...

chemistry!? I need help creating these equations!!! 1. Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas. 2. Calcium hydroxide and phosphoric acid react to form calcium phosphate and water. 3. Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide. 4. Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas.

Chemistry**!!!? If i were given a bottle of saturated calcium chloride solution at 25C. how could u outline the experimental procedure to determine the solubility of CaCl2 in grams/L? Using data booklet.

Chemistry ? When a freshly cut piece of sodium metal, Na, is dropped into a flask with chlorine gas a violent reaction takes place creating a compound. This compound a. has properties that are more like Na than Cl. b. has properties that are more like Cl than Na. c. has properties that are totally unlike either Na or Cl. d. has properties that are like both Cl and Na.

chemistry ? Which of the following contains as many atoms as 18 g of water, H2O? a. 3 moles of sodium, Na b. two moles of oxygen, O2 c. one mole of hydrogen, H2 d. two moles of sodium chloride, NaCl

Chemistry..? If an atom has 43 electrons, 56 neutrons and 43 protons, what is its approx. atomic mass? Is it charged? What is the name of the element? What element would you have if you took away one proton and one neutron from the nucleus of this atom?

chemistry? during a lab activity, a student reacted a piece of zinc with 0.1 M HCL(aq)... COMPLETE THE EQUATION BY WRITING THE FORMULA OF THE MISSING PRODUCT.