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    Exam 40: Gas Exchange: the Respiratory System
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    If N<sub>2</sub> Gas Comprises 79% of Atmospheric Air at Sea
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If N2 Gas Comprises 79% of Atmospheric Air at Sea

Question 25

Question 25

Multiple Choice

If N2 gas comprises 79% of atmospheric air at sea level, what is the partial pressure of N2?


A) about 300 mm Hg
B) about 500 mm Hg
C) about 600 mm Hg
D) about 700 mm Hg

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