Calculate the work done by 5 moles of an ideal gas during expansion from 5 atm at 25 °C to 2 atm at 50 °C against a constant pressure of 0.5 atm. If for the gas Cp = 5.0 cal mol–1 deg–1, find also ∆U,...

Calculate the work done by 5 moles of an ideal gas during expansion from 5 atm at 25 °C to 2 atm at 50 °C against a constant pressure of 0.5 atm. If for the gas Cp = 5.0 cal mol–1 deg–1, find also ∆U, ∆E, ∆H, and q for the process. Calculate the efficiency of this process.