Chemistry IB: determination of the molar mass of a gas Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment Susana Llamas chemistry students during the experiment In this practice IB calculate the relative molecular mass of carbon dioxide, CO2, by application of the ideal gas equation.