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Besides the gases that comprise air, air can also contain variable amounts of water

vapor -- characterized by the term, "relative humidity." Because the amount of water

vapor held in air can change, it is simpler and more sensible to express component

gas percentages on the basis of dry air.

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14y ago
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12y ago

78% nitrogen, 21% oxygen, 0.35% argon, and the rest are other gases such as carbon dioxide

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Q: What are the amount of gases in the atmosphere usually shown as a percentage of dry air?
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What is the percentage of inert gases in atmosphere?

there is 1.25 percent of inert gases in the atmosphere


What is the percentage of inert gases the atmosphere?

there is 1.25 percent of inert gases in the atmosphere


Why are the amount of gases in the atmosphere usually shown as percentages of dry?

It is simpler because the amount of water vapor in the air can change.


Why are the amount gases in the atmosphere usually shown as percentages of dry air?

It is simpler because the amount of water vapor in the air can change.


Which two gases make up the largest percentage of the atmosphere?

Nitrogen and oxygen make up the largest percentage of the atmosphere.


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Why are the amounts of gases in the atmosphere usually shown as percentage Of dry air?

The amount of water vapor in the air changes significantly with location and temperature. so a listing of percentage of gasses in the atmosphere would be different depending on how much water was in the air sampled. That would not be useful, because the other gases in the atmosphere do not change all that much. So it is more helpful to describe the making of the atmosphere as dry air (containing no moisture) and then adjust if needed for the humidity at any one place and time.


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75% nitrogen, 21% oxygen, 3% other gases.


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The gas which makes up the greatest percentage of earth's atmosphere is nitrogen with 78.08%.


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What percentage are the rare gases in the air?

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