Dry air by volume is about 78% nitrogen, 21% oxygen, and a little over 1% everything else. Most of the everything else is argon, formed through the radioactive decay of potassium-40. The water content of air is highly variable and is usually disregarded in figuring the composition of air, but it can be an appreciable fraction of the volume of the air.
Many other gases exist in the atmosphere in small amounts: helium, neon, krypton, xenon, carbon dioxide, and methane are a few.
2007-03-22 15:01:21
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answer #1
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answered by Isaac Laquedem 4
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A couple of the major atmospheric gases are oxygen,nitrogen, and carbon dioxide but there are a lot of other gases that are lesser.
2007-03-22 15:08:09
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answer #2
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answered by Anonymous
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Dry air by volume is about 78% nitrogen, 21% oxygen, and a little over 1% everything else. Most of the everything else is argon,...OOPS! I just let a "poo poo". You might have to adjust those numbers a bit!
2007-03-22 15:34:57
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answer #3
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answered by charlie the 2na 3
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Nitrogen - about 78%
Oxygen - about 21%
the rest is made up of argon, carbon diioxide, neon, helium, methane, krpton.
2007-03-22 14:25:59
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answer #4
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answered by Anonymous
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the air in the earth's atmosphere is mostly made of nitrogen.
2007-03-23 08:06:06
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answer #5
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answered by najj 2
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78% Nitrogen, then Oxygen, CO2, Methane, and a few others
2007-03-22 15:04:22
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answer #6
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answered by star2_watch 3
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Oxygen and Nitrogen, but my science book is kinda old so it might be something else
2007-03-22 14:28:58
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answer #7
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answered by Anonymous
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Most of it (about 80%) is nitrogen.
Other less abundant elements include argon, oxygen, hydrogen, and helium, apart from others.
2007-03-22 14:25:27
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answer #8
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answered by Anonymous
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78% nitrogen
2007-03-22 15:23:38
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answer #9
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answered by Anonymous
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Argon and nitrogen.
2007-03-22 14:23:28
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answer #10
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answered by Anonymous
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