An isolated cylinder contains 0.3 m3 of steam divided into two (closed) chambers by a piston that can operate adiabatically. Initially, the piston is fully retracted to fill the entire cylinder volume with 1 kg of steam at 150°C. Then, air is supplied to the "empty" side at 1.4 MPa and 15°C slowly by a throttle valve to move the piston back toward the middle of the cylinder. Estimate the temperature of the air when it has reached mechanical (e.g., pressure) equilibrium. Steam tables will be helpful