The vapor pressure of pure water at 70C is 240. mm Hg. What is the vapor pressure depression of a solution of 150.

The vapor pressure of pure water at 70°C is 240. mm Hg. What is the vapor pressure depression of a solution of 150. g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 215 g of water? Use molar masses with at least as many significant figures as the data given.