Compared to Its Partial Pressure at Sea Level, What Would

Multiple Choice

Compared to its partial pressure at sea level, what would be the partial pressure of oxygen at an altitude with an atmospheric pressure of only 380 mmHg (recall that sea level atmospheric pressure is 760 mmHg) ?

A) Po₂ would be half as much as it would be at sea level.
B) Po₂ would be twice as much as it would be at sea level.
C) Po₂ would be one-fourth as much as it would be at sea level.
D) Po₂ would be three-quarters as much as it would be at sea level.