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Answer to: make a list of the gases present in the earth atmosphere
| Gas | Volume | ||
|---|---|---|---|
| Name | Formula | in ppmv | in % |
| Nitrogen | 780,840 | 78.084 | |
| Oxygen | O | 209,460 | 20.946 |
| Argon | Ar | 9,340 | 0.9340 |
| Carbon dioxide | CO | 400 | 0.04 |
| Neon | Ne | 18.18 | 0.001818 |
| Helium | He | 5.24 | 0.000524 |
| Methane | CH | 1.79 | 0.000179 |
| Not included in above dry atmosphere : | |||
| Water vapor | H O | 10 — 50,000 | 0.001 % — 5 % |
| notes :
volume fraction is equal to mole fraction for ideal gas only , also see volume ( thermodynamics ) ppmv : parts per million by volume Water vapor is about 0.25 % by mass over full atmosphere Water vapor strongly varies locally |
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