If 20% of the air is composed of O₂, the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 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

To calculate the partial pressure of oxygen, we need to use Dalton's Law of Partial Pressures, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the gases in the mixture. First, we need to calculate the partial pressure of O₂: Partial pressure of O₂ = 20% x 350 mm Hg = 70 mm Hg Next, we can calculate the partial pressure of oxygen: Partial pressure of oxygen = Total pressure - Partial pressure of O₂ Partial pressure of oxygen = 350 mm Hg - 70 mm Hg = 280 mm Hg Therefore, the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 mm Hg is 70 mm Hg.

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

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