Two tanks are connected as shown here. Tank 1 initially contains an ideal gas at 10 bar and 20°C, and both parts of tank 2 contain the same gas at 1 bar and 20°C. The valve connecting the two tanks is opened long enough to allow the pressures in the tanks to equilibrate and is then shut. There is no transfer of heat from the gas to the tanks or the frictionless piston, and the constant-pressure heat capacity of the gas is 4R. Compute the temperature and pressure of the gas in each part of the system at the end of the process and the work done on the gas behind the piston (i.e., the gas in subsystem 3).