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March 4, 2015

Homework Help: Physics

Posted by Gyuzal on Monday, February 21, 2011 at 1:25pm.

Please, help me with this problem...
im a bit confused abt solving it..

In a tank of volume V=7.5 L, temperature T=300 K, there is a mix gases: n1=0.1 mole of oxygen, n2=0.2 mole of nitrogen, n3=0.3 mole of carbon dioxide. Considering the gases ideal, find:
(a) the pressure of the mixture,
(b) average molar mass  of the mix, which acts in the equation of state PV=(m/ )RT, where m is the mix mass.

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