An atmospheric scientist has created a mixture of air consisting of 15% oxygen and PO₂ of 75 mm Hg. The overall air pressure is
A)500 mm Hg.
B)5 mm Hg.
C)50 mm Hg.
D)0.5 mm Hg.
E)5000 mm Hg.

Question

Quizplus · Accepted Answer

The partial pressure of oxygen (PO₂) is calculated as a percentage of the total air pressure. Given that PO₂ is 75 mm Hg and oxygen makes up 15% of the air, the total air pressure can be calculated as 75 mm Hg / 0.15 = 500 mm Hg.

An Atmospheric Scientist Has Created a Mixture of Air Consisting