A solution containing 1.470 g of dichlorobenzene in 50.00 g of benzene boils at 80.60 degree C and a pressure of 1.00 bar. The boiling point of pure benzene is 80.09 degree C, and the molar enthalpy of vaporization of pure benzene is 32.0 kJ/mol. Determine the molecular mass of dichlorobenzene

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