An insulated vessel containing 2 kg of oxygen (O 2 ) at 2.5 MPa and 300°C is connected via an insulated tube and a valve to a second vessel of 0.44 m3 that contains 1.2 kg of nitrogen (Figure P...

An insulated vessel containing 2 kg of oxygen (O₂) at 2.5 MPa and 300°C is connected via an insulated tube and a valve to a second vessel of 0.44 m3 that contains 1.2 kg of nitrogen (Figure P12.42). The second vessel is maintained in good thermal contact with the environment. The valve is opened and oxygen fl ows from the fi rst vessel to the second till the pressures are equalized and then the valve is closed again. The environment is air at 101 kPa and 28°C. Assume that oxygen and nitrogen are ideal gases:

a. Find the work and heat interactions of the vessels. b. Find the maximum work between the two end states. c. Find the heat interaction connected with the maximum work. d. Find the irreversibility of the process.