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posted by laura Monday, December 5, 2011 at 6:52pm.
A 0.0097561 g quantity of an unknown gas occupies 0.2 L at 500 K and 2 atm. What is the Molecular Weight (MW) of the gas ?
Use PV = nRT and solve for n = moles. Then n = grams/molecular weight. Solve for MW.
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