A stream of pure liquid benzene fl owing at a rate of 10 mol/s at 40°C and 10 bar enters a vessel where it is fl ashed. At steady-state, 6 mol/s of the benzene leaves as vapor, and the rest leaves as liquid. The fl ash vessel operates at a pressure of 5 bar; determine the rate of heat input required (in W). At 1 atm, benzene boils at 80.1°C and has an enthalpy of vaporization of 30,765 J/mol.