What Is the Molar Mass of Toluene If 0

Multiple Choice

What is the molar mass of toluene if 0.85 g of toluene depresses the freezing point of 100. g of benzene by 0.47°C? (K_f of benzene is 5.12°C/m.)

A) 93 g/mol
B) 78 g/mol
C) 10.7 g/mol
D) 82 g/mol
E) 927 g/mol