Benzene has a melting point of 5.5°C and a boiling point of 80.1°C. Given the other constants below for
benzene (C6H6), which of the following processes would require LEAST amount of energy? Assume in
each case the mass of benzene is used.

Csolid = 118.4) · mol-1. K-1
Cliquid = 134.8) · mol-1.K-1
Cvapor = 82.444) .mol-1. K-1
AHvap = 30.77 kJ . mol-
AHfus = 9.9 kJ .mol-1
a) Warming benzene from -10°C to 0°C.
b) Melting benzene from 5.5°C.
c) Warming benzene from 91°C to 101°C.
d) Warming benzene from 65°C to 75°C.