Question

The percentage of nitrogen in the air is 78.0%, but the percentage in air exhaled while breathing is __________.

A. 74.0%
B. 75.0%
C. 76.0%
D. 77.0%

Answer 1

Answer:

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this is the composition of air while exhaling

5.0–6.3% water vapor

79% nitrogen

13.6–16.0% oxygen

4.0–5.3% carbon dioxide

1% argon

Explanation:

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