If 20 percent of the air is composed of O₂,what is the partial pressure of oxygen at sea level where atmospheric pressure is 760 mmHg?
A) 20 mmHg
B) 70 mmHg
C) 152 mmHg
D) 760 Hg

Question

Quizplus · Accepted Answer

To calculate the partial pressure of oxygen, we need to multiply the atmospheric pressure by the fractional composition of oxygen.

So, partial pressure of O₂ = 0.20 x 760 mmHg = 152 mmHg

Therefore, the correct answer is C.

If 20 Percent of the Air Is Composed of O₂,what