At sea level, atmospheric pressure is 760 mm Hg. Oxygen gas is approximately 21% of the total gases in the atmosphere. What is the approximate partial pressure of oxygen?
A) 0.2 mm Hg
B) 20.0 mm Hg
C) 76.0 mm Hg
D) 160.0 mm Hg
E) 508.0 mm Hg
Correct Answer:
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