Posted by **Lauren** on Thursday, May 12, 2011 at 12:28am.

A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius.

a) what is the molar mass of the gas?

b) if the volume of the temperature are kept constant while 0.400 g of the same gas are added to that already in the container, what will the new pressure be?

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