Question

which of the gases in air are compound? Explain how can you tell.​

Answer 1

Explanation:

Explanation: The molecules of two different elements, nitrogen and oxygen, make up about 99 percent of the air. The rest includes small amounts of argon and carbon dioxide.

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Answer 2

Explanation:

Air is a mixture of gases, most of which are naturally occurring. The dry composition of the atmosphere is mostly nitrogen and oxygen. It also contains fractional amounts of argon and carbon dioxide and trace amounts of other gases, such as helium, neon, methane, krypton, and hydrogen (NASA).