An Unknown Liquid Is Vaporized in a 273-ML Flask by Immersion

An unknown liquid is vaporized in a 273-mL flask by immersion in a water bath at 99°C.The barometric pressure is 753 torr.If the mass of the substance's vapor retained in the flask is 1.362 g,what is its molar mass?

A) 20.4 g/mol
B) 40.9 g/mol
C) 112 g/mol
D) 154 g/mol
E) 184 g/mol