The partial pressures of oxygen in atmospheric air and in air exhaled by a human are in the ratio of 4:3. If the mole fraction of oxygen in atmospheric air is 0.210 what is mole fraction of oxygen in exhaled air?

Question

Quizplus · Accepted Answer

The mole fraction of oxygen in exhaled air can be calculated using the given ratio of partial pressures and the mole fraction in atmospheric air. Given that the ratio of partial pressures of oxygen in atmospheric air to exhaled air is 4:3, and the mole fraction of oxygen in atmospheric air is 0.210, we can set up a proportion to find the mole fraction in exhaled air: (0.210/4) * 3 = 0.1575, which rounds to 0.158.

The Partial Pressures of Oxygen in Atmospheric Air and in Air