A solution is prepared by mixing 50.0L of toluene (C6H5CH3,d=0.867g/cm3) with 125ml of benzene (C6H6,d=0.874g/cm3). Assuming that the volumes add upon mixing, what are the mass percent, mole fraction, molality and molarity of the toluene? Ans: 28.4%;2.69mol/L; 4.32mol/kg,X=0.252