Cholesterol Is Poorly Soluble in Water,but It Will Dissolve in Nonpolar

question 10

Multiple Choice

Cholesterol is poorly soluble in water,but it will dissolve in nonpolar solvents such as cyclohexane (C₆H₁₂,84.18 g/mol,K_f = 20.2 ^$\circ$ C/m,T_f = 6.55 ^$\circ$ C) .When 10.0 g cholesterol was dissolved in 0.500 kg cyclohexane,the freezing point of the solution was 5.50 ^$\circ$ C.What is the approximate molar mass of cholesterol?

• A)404 g/mol
• B)385 g/mol
• C)73.5 g/mol
• D)248 g/mol
• E)424 g/mol