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Question

What amount of heat (in kJ) is required to convert 20.6 g of an unknown solid (MM = 83.21 g/mol) at -5.00 °C to a liquid at 52.3 °C? (heat capacity of solid = 2.39 J/g・°C; heat capacity of liquid = 1.58 J/g・°C; ∆Hfus = 3.72 kJ/mol; Tf = 10.3°C)