A 0.15 m3 adiabatic closed cylinder is divided into two equal parts by a heavy floating piston, whose weight is equivalent to a pressure difference of 0.65 MPa (Figure P XXXXXXXXXXThe lower part...

A 0.15 m3 adiabatic closed cylinder is divided into two equal parts by a heavy floating piston, whose weight is equivalent to a pressure difference of 0.65 MPa (Figure P12.43). The lower part contains oxygen (ideal gas, M = 32, k = 1.4) at 40°C. The upper part contains nitrogen (ideal gas, M = 28, k = 1.4) at 0.30 MPa and 40°C. After a while the piston disintegrates and the pieces fall to the bottom of the container. The environment is air at 101 kPa and 28°C. Assume that oxygen and nitrogen are ideal gases:

a. Find the final state inside the cylinder.

 b. Find the irreversibility of the process.