Question

2. Air is a compound of mainly oxygen and nitrogen gas
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Answer 1

Explanation:

Air is mostly gas

So what is air, exactly? 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.

Answer 2

Answer:

air is made up of 78% nitrogen and 21% of oxygen and the remaining 1% is made up of other gases like carbon dioxide, etc....

Explanation:

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