The vapor pressure of pure benzene (C6H6) is 0.930 atm at a certain temperature. A solution was prepared by dissolving the 10.0 g of a non-dissociating, nonvolatile solute in the 78.11 g of benzene at that temperature. The vapor pressure of the solution was found to be 0.900 atm. assuming the solution behaves ideally, estimate the molar mass of the solute.