A solution is prepared by dissolving 20.2 of methanol in 100.0 of water at 25 . The final volume of the solution is 118 . The densities of methanol and water at this temperature are 0.782 and 1.00 , respectively. For this solution, calculate each of the following. a. what is the molarity b. what is the molality c. what is the percent by mass d. what is the mole fraction e. what is the mole percent