Question

A compound is heated to produce a gas whose molecular weight is to be determined. Which of the following is necessary to calculate the molecular weight of the gas, but does NOT need to be measured during the experiment?

a) The volume of gas collected
b) The temperature of the gas
c) The pressure of the gas
d) The color of the compound

Answer 1

The necessary information to calculate the molecular weight of a gas in this experiment is the volume, temperature, and pressure of the gas.

Step-by-step explanation:

The necessary information to calculate the molecular weight of a gas in this experiment is the volume of gas collected (option a)), the temperature of the gas (option b)), and the pressure of the gas (option c)). These measurements can be used in the ideal gas equation to calculate the number of moles of the gas, which can then be used to determine its molar mass.