Question

Air contains the highest percentage of _______.​

Answer 1

Answer:

By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.

Answer 2

Explanation:

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The most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air.

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