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OpenStudy (anonymous):
what is the molecular mass of a gas if 2.1 g of the gas occupies the volume of 1.72 L at 25 degrees celcius and 750 mm Hg???"
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OpenStudy (aaronq):
use the ideal gas law and rearrange it to solve for molar mass, M PV=nRT n=m/M PV=mRT/M M=mRT/PV
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