One cubic meter of an ideal gas at 600 k and 1000 malek kpa expands to five times its initial volume as follows; a) by a mechanically reversible, isothermal process, b) by a mechanical reversible, adiabatic process, c) by an adiabatically irreversible process in which expansion is against a restraining pressure of 100 kpa for each case calculate the final temperature, pressure, and the work done by the gas. cp 21j/mol k.