What Is the Vapor Pressure at 20°C of an Ideal

Multiple Choice

What is the vapor pressure at 20°C of an ideal solution prepared by the addition of 4.50 g of the nonvolatile solute urea,CO(NH₂) ₂,to 22.7 g of methanol,CH₃OH? The vapor pressure of pure methanol at 20°C is 89.0 mmHg.

A) 8.51 mmHg
B) 64.9 mmHg
C) 74.3 mmHg
D) 80.5 mmHg
E) 24.1 mmHg