Benzene (C6H6) has a normal boiling point of 80.1 C and normal melting point 5.42 C. The molar heat capacity of solid benzene is 118.4 J/K mol; of liquid benzene is 134.8 J/K mol; and the molar heat capacity of benzene vapor is 82. 4 J/K mol. the heat of evaporation for benzene is 30.8 kj/mol and heat of fusion 9.9 kj/mol.

a) how much heat is needed to heat 154 g of benzene from 2.7 C to 98.5 C?

b) sketch a heating curve for benzene showing the temperature changes and phase transitions that occur when heat is added to the above sample from 2.7 C to 98.5 C.