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From Wiktionary under the GNU Free Documentation License. CompositionFrom Wikipedia, the free encyclopedia Jump to: navigation, search Look up composition or compose in Wiktionary, the free dictionary.Composition can refer to:
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GNU Free Documentation License What is the percentage composition of nicotine? Q. Here it is. Nicotine is a compound that contains carbon, hydrogen and oxygen. If a 2.5 g sample of nicotine is burned in oxygen, 6.78 g of carbon dioxide, 1.94 g of water and 0.432 of nitrogen are the products of combustion. What is the percentage composition of nicotine? Guys, I really need your help on this. I m not good in chemistry and I know some of you are. Thanks. Asked by CharM - Sat Mar 21 07:55:15 2009 - - 1 Answers - 0 Comments A. if nicotine contains C,H and O we can write a formula like this : CxHyOz ---> CO2 + H2O + N2 moles of CO2 gained = 6.78g/ 44 g/mol = o.154 mol so thr mst b 0.154 mol of C moles of H2O = 1.94g / 18 g/mol = 0.108 mol so thr mst b 0.216 mol of H moles of N2 =0.432g/ 28 g/mol = 0.0154 mol so thr mst b 0.0308 mol of N moles of O must be; 0.154*2 + 0.108 =0.416 mol c h o n num f moles 0.154 0.216 0.416 0.0154 devide by the smallest number (0.0154) 10 14 27 1 therefore the composition of nicotine must be as follows; C10 H14 O27 N << Answered by bookworm - Sat Mar 21 01:42:41 2009 What instrument to use to figure out the composition of gases in a sample? Q. As it says, what would be the easiest (and possibly the cheapest) way of figuring out the composition of various gases in a sample. And to add, i know about the mass spectrometer. I was looking for something more portable and handheld. Ya know the kinda one they use to find out how much of what all gases are coming out of the car's tail pipe... Asked by afthefragile - Wed Jul 29 04:05:10 2009 - - 3 Answers - 0 Comments A. The cheapest methods involve using electrochemical and infrared sensors inside a hand held instrument. There are many for car exhaust analysis. But the most powerful instrument is the Gas Chromatograph for seperation of gases and quantification. Answered by Chromodynamix - Tue Jul 28 21:31:28 2009 What is the chemical composition of oil?
Q. Okay, they say there is no evidence of life below 18,000 feet deep. The problem is that there is OIL be drilled at 30,000 feet and deeper. If oil is a hydrocarbon (organic fossil fuel) then how did the organisms get that deep when there was no life at that time in the Earth's history? The other part is that there is organic remnants in oil (from 18,000 feet and less?) of organisms. What about the chemical composition of oil that is deeper than 18,000 feet? Does it have organism remnants as well? Asked by Matt - Sat Jun 12 23:27:15 2010 - - 4 Answers - 0 Comments A. Hydrogen and carbon. It is possible for it to be formed in rocks from the chemical elements but none of Dr Gold's predictions about where it would be found if it was abiogenic have turned out to be right. Answered by Salty Dog - Sat Jun 12 17:28:44 2010 From Yahoo Answer Search: "composition"  economictimes.indiatimes.com Thu, 02 Sep 2010 11:47:45 GMT+00:00 Economic Times Among private players, Future Generali (FG) has the highest composition of traditional term policies in its total pie, Sood said, adding the new age ...  huffingtonpost.com Fri, 03 Sep 2010 18:02:02 GMT+00:00 Huffington Post (blog) There is no final word on how the congressional elections will play out, let alone what the composition of the next Republican caucus will be. ...  community.connectsavannah.com Thu, 02 Sep 2010 21:13:17 GMT+00:00 Connect Savannah.com (blog) The tool also spots new musical trends and compares a song's composition to such trends to determine its commercial prospects. From Google News Search: "composition"  lucachittaro.nova100.ilsole24ore.com 532px x 550px | 114.40kB [source page] 2008 Il Sole 24 Ore Web report from CHI 2008  gravittproductions.com 333px x 500px | 166.20kB [source page] studying to become dentists and met at dental school We thought it would be fun to get some shots up at school This one was just for fun They are pretty excited to graduate in just a few months  giuliasagramola.it 353px x 600px | 29.30kB [source page] The assignment was to create an alphabet with our home elements I did my version represent my house in Barcelona From Yahoo Image Search: "composition"  befunky.com Christopher Derrick Mon, 23 Aug 2010 14:03:15 GM Composition. , the design of a photograph, is what immediately sets one photo apart from another of the exact same subject... From Google Blog Search: "composition" |
