How much energy must be removed from a 125 g sample of benzene (molar mass=78.11g/mol) at 425.0 k to liquify the sample and lower them temperature to 335.0 k?
change of hvap =33.9 kj.mol\
change of hfus = 9.8 kj/mol
cliq = 1.73 J/g x *c
cgas = 1.06 J/g x *c
csol = 1.51 J/g x *c
t melting = 279.0 k
t boiling = 353.0 k