Experiment 5 Molar Volume of a Gas

The volume occupied by a mole of a gas is calculated in this experiment. A sample of a solid substance is heated, decomposing it into several products, including a gas. The mass of the gas is determined by the weight difference of the solid before and after heating and is then converted to moles. The volume of the gas, the pressure, and temperature are measured. (See the chapter on Gases.) 

the mass of the test tube plus solid sample (before the reaction) 

volume of water displaced into the beaker, if the variation is used 

The mass of the test tube after the reaction must be determined after the test tube has completely cooled to room temperature. 

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