Question

1) The percentage of oxygen in the atmosphere is 1)80.5% 2)20'9% 3)29.9% 4) 30.9%​

Answer 1

Answer:

By volume, dry air contains 78.09% nitrogen, 20.94% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.

solution

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Answer 2

Answer:

20'9

Explanation:

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