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August 3, 2015

Homework Help: College Chemistry

Posted by Fernando on Tuesday, March 9, 2010 at 12:41pm.

A mixture of He and O2 is placed in a 4.00L flask at 32 degrees Celsius. The partial pressure of the He is 2.7 atm and the partial pressure of the O2 is 1.4 atm. What is the mole fraction of O2??

I don't understand how to do this.

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