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The percentage of nitrogen gas in the air is , The percentage of nitrogen gas in the air is
The percentage of nitrogen gas in the air is
A.
78
78
B.
21.5
21.5
C.
40
40
D.
3
3
Solution
A. 78
Explanation
By volume, air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.
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