If 20 Percent of the Air Is Composed of O₂

question 152

Multiple Choice

If 20 percent of the air is composed of O₂, what is the partial pressure of oxygen at an altitude of 20000 feet, where atmospheric pressure is 350 mmHg

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

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