Five moles of an ideal gas at 293K is expanded isothermally from an initial pressure of 2.1 MPa to 1 — Thermodynamics and Thermochemistry Chemistry Question

Question

Five moles of an ideal gas at 293K is expanded isothermally from an initial pressure of 2.1 MPa to 1.3 Mpa against at constant external pressure 4.3 MPa. The heat transferred in this process is _______kJ mol . (Rounded-off to the nearest integer) [Use R = 8.314J mol K ] -1 -1 -1