Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97°C. The pressure of the chloroform is 728 mmHg. 187 g/mol 112 g/mol 121 g/mol 8.28 ✕ 10-3 g/mol 31.6 g/mol