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Posted by on Wednesday, July 30, 2014 at 9:48pm.

A mixture of methane and helium is placed in a 2.0 l flask at 27 degrees the partial pressure of methane is 0.72 ATM and the partial pressure of helium is 0.22 ATM . What is the mole fraction of ch4?

  • CHEMISTRY - , Wednesday, July 30, 2014 at 10:12pm

    mole fractions are proportional to temp:

    find total moles:
    n=PV/RT where P=.94ATM


    n1/n=.72/.94

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