Measurement conversions involving volume

When reactants are liquids, they are almost always measured by volume. So, to do calculations involving liquids, you add two more steps to the sequence of mass-mass problems—the conversions of volume to mass and of mass to volume. Five conversion factors—two densities, two molar masses, and a mole ratio—are needed for this type of calculation, as shown in Skills Toolkit 4. 

In problems involving a gas, it is easier to measure the volume of the gas than the mass. Mixed mass-volume problems include both mass-volume problems, where you are given a mass and asked for a volume, and volume-mass problems, where you are given a volume and asked for a mass. You will need to do the molar conversions involving the molar volume of a gas, so review Lesson 7-2 if necessary. The basic steps for solving this type of problem remain the same ... 

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