Multiple Choice
Atmospheric pressure at the summit of Mount Everest is about one third the pressure at sea level, which is 760 mm Hg. If oxygen makes up 21% of the atmosphere by volume, the partial pressure of oxygen (PO₂) on Mount Everest is approximately ________.
A) 53 mm Hg
B) 157 mm Hg
C) 255 mm Hg
D) 760 mm Hg
Correct Answer:

Verified
Correct Answer:
Verified
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