Estimate the final temperature and the work required when 1 mol of n-butane is compressed isentropically in a steady-flow process from 1 bar and 50°c to 7.8 bar. assume the following: • the process is reversible and adiabatic. • the work it asks for is the shaft work. • use the lee-kesler correlation. in this problem, keep the first two terms (a- and b-terms) of the ideal-gas-state heat capacity (table c.1) only in your calculation.