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If 20 Percent of the Air Is Composed of O₂

Question 147

Multiple Choice

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at sea level, where atmospheric pressure is 760 mmHg

A) 20 mmHg
B) 70 mmHg
C) 152 mmHg
D) 760 mmHg

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