What is the percentage of oxygen in air?

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asked Jul 26, 2023 68.4k views

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Ryan Kempt · Answer 1 · 2023-08-01T23:07:31+0000

21% becuase 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.

What is the percentage of oxygen in air?

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