If 20% of the air is composed of O₂, the partial pressure of oxygen at sea level where atmospheric pressure is 760 mm Hg is A) 20 mm Hg B) 760 mm Hg C) 70 mm Hg D) 350 mm Hg E) 152 mm Hg

Question

Quizplus · Accepted Answer

The partial pressure of a gas is the fraction of the total pressure that the gas contributes. Since oxygen makes up 20% of the air, its partial pressure is 20% of 760 mm Hg, which is 0.20 * 760 = 152 mm Hg.

If 20% of the Air Is Composed of O2, the Partial

If 20% of the Air Is Composed of O₂, the Partial