A student performs the experiment and records the following

Last updated: 7/11/2022

A student performs the experiment and records the following data: Barometric pressure: 741.6 torr Temperature of water bath: 99 °C Volume of flask: 273 mL Mass of condensed vapor: 0.65 g a. The student calculates the molecular weight of the gas to be 2.6 x 10-5 g/mol. What mistake did he make?