pO2 = XO2*Ptotal
pO2 = 0.21*760 = approx 160 mm
Then pressure remaining is 760-approx160 = approx?
Calculate the total pressure in the flask after all of the oxygen has been removed from the air in the flask. Assume that the temperature is 25¡ÆC, the initial barometric pressure is 760 torr
and that air is 21% oxygen by volume.
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