The first step in the manufacture of the isobutene from the isomerization of n-butane is to compress the feed stream of n-butane. It enters the compressor at 9.47 bar and 80oC and leaves at 18.9 bar and 120oC to be fed into the isomerization reactor. The work supplied to the compressor is 2100J/mol. Calculate using volume and temperature as your independent variables the heat that must be supplied into the unit per mole of n-butane that passes through the compressor, if the fluid obeys the van der Waals equation of state. For n-butane Tc= 425.1K, Pc=37.96bar, Vc=255cm3/mol.