A \(1-\mathrm{m}^{3}\) tank contains air at \(0.1 \mathrm{MPa}\) absolute and \(20^{\circ} \mathrm{C}\). The tank is pressurized to \(2 \mathrm{MPa}\). Assuming that the tank is filled adiabatically and reversibly, calculate the final temperature of the air in the tank. Now assuming that the tank is filled isothermally, how much heat is lost by the air in the tank during filling? Which process (adiabatic or isothermal) results in a greater mass of air in the tank?