Question

what is the composition of air​

Answer 1

Answer:

Air is mostly gas

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78% percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Explanation:

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Answer 2

ANSWER:

Air is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.