The vapor pressure of pure water at 25°C is 24.0 mm Hg. What is the expected vapor pressure at 25°C of an ideal solution of a nonvolatile nonelectrolyte in which the mole fraction of water is 0.900? (A) 1.48 mm Hg (B) 2.40 mm Hg (C) 21.6 mm Hg (D) 24.0 mm Hg (E) 26.7 mm Hg