Basic sources of atmospheric gases?
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One of the major gases is inert-Argon, and doesnt really seem to cycle-it makes up about 1%.  The primary gas is nitrogen, a small amount of which is fixed in the roots of plants (or by symbiotic organisms in those roots) and lifeforms such as blue-green algae-it makes up about 78%.  The greatest cycling gas is oxygen, which makes up about 21%.  Free oxygen, as found in our atmosphere, is extremely rare and likely would not be found in the absence of life-Oxygen in very reactive-many elements and compounds readily oxidize, such as iron turning to rust.  On Earth, plants take in carbon dioxide and split it, using the carbon to build things such as carbohydrates- the oxygen is releases, and used by aerobic lifeforms for respiration.  The level of carbon dioxide is about 0.1%- This is also very unusual, since in other planets with an atmosphere, carbon dioxide is a major gas...again, low CO2 is probably a sign of life.  The CO2 is low because the plants use it-it is returnd to the atmosphere by respiration.
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A number of differnt elements, including oxygen, hydrogen, nitrogen, carbon, argon and others.  The mojority of air is nitrogen at about 63%, while depending where int he world you are, oxygen only makes up 15-19 percent.
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You can find noble gasses as trace amounts in the air, and are produced through various forms of nucleosynthesis in stars and supernovae.\n\n*Helium is a fusion product of main sequence stars and a fusion fuel for some Red Giant Stars\n*Neon is a fusion product of some red giant stars and a fusion fuel for massive stars nearing the end of their lives\n*Argon is produced by the decay of Potasium, and is often used as an inert gas while welding tungsten.\n*Krypton is a fission product of uranium, and used to make a powerful, short lived laser source.\n*Xenon is often used in high powered lamps\n*Radon is a decay product of Radium, and is radioactive, there are no to many common uses of Radon.
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http://www.airliquide.com/en/business/products/gases/gasdata/index.asp?GasID=25
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Oh I know,  I know, is it the ozone? neeee Oh I'm sorry the answer we were looking for was actually atmosphere. Sorry little johnny better luck next time on guess that ocean of air around the Earth.
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Carbon dioxide: Venus, Mars\nHydrogen: Jupiter, Saturn, Uranus, Neptune
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Oil\nwood\nleaves\nmethane\njust about any vegetation\nfat (like whale oil or blubber)\nnatural gas\ncoal\ntar\npeat (actually a form of coal)\nalcohol (from fermented vegetation or nectar)\netc
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Physically, gases are produced by evaporation from liquids or sublimation from solids. Dissolved or absorbed gases can be freed by changes in pressure or temperature, too.\n\nChemically, gases can be produced during reactions, wherever small molecules are produced that cannot be dissolved in the solvent.\n\nSpecific (or purified) gases have specific methods of production, be it in the lab, in the nature, or industrially.
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Nitrogen is the major gas present in the earth's atmosphere(78%), followed by Oxygen(21%) and the rest 1% of other gases like Argon, hydrogen etc.
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96% Carbon Dioxide\n4% Nitrogen\n\n(closer to 3.5% nitrogen with assorted other gasses making up the last 0.5%)
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The air is the gaseous compounds and elements that make up the Earth's atmosphere.\n\nThe essence of the air is that it is made up of mostly Nitrogen (78%), and also a fair amount of Oxygen (21%), plus Argon and a myriad of other gases including water vapour, ozone and carbon dioxide.\n\nOxygen is probably the most important element for humans, as our metabolism has evolved to utilize oxygen as the ultimate electron receptor in the biochemical pathway that provides the energy to run the metabolic processes that keep our body, and most importantly our energy hungry brain, operating.\n\nWithout oxygen, our body is forced to switch to the 'back-up generator' of anaerobic respiration, and that pathway simply doesn't provide enough energy to keep our body operating for very long.  It works fine for some bacteria, but we need a bit more oomph in our catabolism.\n\nThe atmosphere also shields us from some of the harmful effects of the radiation of our sun, such as ultraviolet radiation, and makes temperature and climate more stable, holding heat when the sun isn't shining on us, and taking longer to heat up when it is shining.  Thus it also makes our lives more comfortable.\n\nPlus if we didn't have the air, it wouldn't be there to refract light and make the sky blue, or form regions with big fluffy poofs of water vapour to scud lazily across the blue sky on a lazy summer afternoon, or provide a medium in which butterflies can dance prettily in summer air.\n\nSo I have no idea what 'quimic composition' is, but that's the essence of air.
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Hi,, hydrogen, oxygen, and nitrogen... \n\n good luck.....
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Carbon dioxide (which is emitted form cars) is the major gas from gases contribute to greenhouse effect, other gases cuase this effect like water vapor, methane, nitrous oxide,and CFC's
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The cheapest source of course is water, but getting hydrogen from water is expensive. Other sources of hydrogen induce\nsodium borohydride NaBH4, in which then added to water is will give out hydrogen gas.
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Any gas (CO2, N2, whatever) that doesn't abide by the Ideal Gas Law....\n\nIDEAL gases are just that, IDEALS, and they abide by PV=nRT.\n \nIn the real world, gases abide by a more modified version of this equation.  Hence the term, "real" gases.
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Natural Gas like methane CH4 and ethane, butane, propane ..\n\nCO2, H2O .. \n\nvolcanic gases : water vapor, carbon dioxide, sulfur either as sulfur dioxide (high-temperature volcanic gases) or hydrogen sulfide (low-temperature volcanic gases), nitrogen, argon, helium, neon, methane, carbon monoxide and hydrogen. Other compounds detected in volcanic gases are oxygen (meteoric), HCl, HF, HBr. Exotic trace compounds include methyl mercury, halocarbons (including CFCs), and halogen oxide radicals.\n\nsorry for not giving a complete answer but some are better than nothing !!!
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Primary(aprox. 46 billion years ago) atmhosphere was included hydrogen, helium and ammonia. \nSecondary (current) atmosphere eveolved as volcanic activity added nitrogen, water vapor and CO2 to the atmosphere. And appearance of green plants added free oxygen to the air. \nAdditionally there are some variable components of atmosphere:two imporatnt ones; water vapor and ozone. Permanent compnonets are NITROGEN, OXYGEN, ARGON and CO2.