Molecular Mass Lab

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The purpose of this lab is to identify the molecular mass of the volatile liquid. The molecular mass needs to be identified because it is a property that helps determine a substance. Since the substance is volatile, or easily evaporated, the liquid can be converted into gas. As the substance converts into gas, the ideal gas law, PV=nRT, can be used to calculate the the number of moles. Once, the number of moles is calculated, it is used in the molecular mass equation, which is, molecular mass = grams /mol. The grams of the gas is taken directly by measuring the substance, and the moles is taken indirectly through the calculations of the ideal gas law. The result of the calculations should be the molecular mass of the substance. To identify
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