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December 22, 2014

Homework Help: Physics

Posted by ana on Thursday, November 19, 2009 at 5:55pm.

Total lung capacity of a typical adult is approximately 5.0L. Approximately 20% of the air is oxygen, as air is 20% oxygen. At sea level and at an average body temperature of 37 C, how many moles of oxygen do the lungs contain at the end of an inflation?

n=PV/RT
V=5.0L=.005m^3
P=1.013e^5Pa
R=8.31J/mole*K
T=37c=310k
so n=124.85
then I times by .20 to get the moles of Oxygen...but I'm missing something?

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