Dry air is 78.08% nitrogen, 20.95% oxygen and 0.93% argon with the 0.04% being other gases. If the atmospheric pressure is 760.0 torr, what is the partial pressure of oxygen in dry air?
A) 20.95 torr
B) 159.2 torr
C) 600.8 torr
D) 760.0 torr
B
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