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November 4th, 2016, 02:13 PM   #1
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partial air pressure

calculate the density of air at the temperature 15°C (=288K) and at the pressure 99.5 kPa. Structure of the air is: 80% of volume is nitrogen, 20% of volume is oxygen. I am having problem with this task. Is there any correlation between partial pressure and partial volume?
I already know that:
density(air)= ( m(N2)+m(O2) ) / V
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January 8th, 2017, 08:02 AM   #2
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P = dRT/(molar mass)
P = pressure
d = density
R = constant, 0.08206 Lxatmxmol^-1xK^-1
T = temperature in K
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