Air in a testing chamber is specially mixed so that its oxygen content is 20% and its overall air pressure is 500 mm Hg.What is the partial pressure of oxygen in this chamber?
A)1000 mm Hg
B)100 mm Hg
C)10 mm Hg
D)1 mm Hg

Question

Quizplus · Accepted Answer

The partial pressure of oxygen can be calculated by multiplying the oxygen content (20%) by the total pressure (500 mm Hg), which gives a result of 100 mm Hg. Therefore, the correct answer is B. Option A is incorrect as it suggests that the partial pressure of oxygen is double the total pressure, which is not possible. Option C and D are also incorrect as they suggest extremely low partial pressures of oxygen, which would not be compatible with human life.

Air in a Testing Chamber Is Specially Mixed So That