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 mm Hg (recall that sea level atmospheric pressure is 760 mm Hg)?
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.
A
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