What is the Vapor Pressure of a Urea Solution at 24 C?

[TypeFun]

Homework Statement

If you dissolve 9 g of urea (60.06 g/mol) in 10 mL of water, what is the vapor pressure of the solution at 24 C? Assume the density of water is 1.00 g/mL and the vapor pressure of pure water at 24 C is 22.4 mmHg.

Homework Equations

Henry's Law, maybe? I'm not sure.

The Attempt at a Solution

I have no clue. Help please.

 

[Borek]

Not Henry's, Raoult's.