1a. The vapor pressure of benzene is 73.03 mm Hg at 25 C. A nonvolatile, nonelectrolyte that dissolves in benzene is estrogen. Calculate the vapor pressure of the solution at 25 C when 7.208 grams of estrogen, C₁₈H₂₄O₂ (272.4 g/mol), are dissolved in 289.7 grams of benzene. benzene = C₆H₆ = 78.12 g/mol. VP(solution) = _____mm Hg

1b. The vapor pressure of benzene is 73.03 mm Hg at 25C. How many grams of testosterone, C₁₉H₂₈O₂, a nonvolatile, nonelectrolyte (MW = 288.4 g/mol), must be added to 180.0 grams of benzene to reduce the vapor pressure to 70.87 mm Hg ? benzene = C₆H₆ = 78.12 g/mol. ____g testosterone