A 522-G Sample of a Compound Is Dissolved in 200

Multiple Choice

A 5.22-g sample of a compound is dissolved in 200.0 g of benzene. The freezing point of this solution is 1.08°C below that of pure benzene. What is the molar mass of this compound? (Note: K_f for benzene = 5.12°C/m.)

A) 1.24 × 10² g/mol
B) 2.82 × 10¹ g/mol
C) 1.82 × 10² g/mol
D) 4.95 × 10³ g/mol
E) 5.51 × 10² g/mol