An ideal monatomic gas initially has a temperature of 335 K and a pressure of 5.02 atm. It is to expand from volume 554 cm to volume 1490 cm3. If the expansion is isothermal. what are (a] the final pressure and (b) the work done by the gas? If, instead, the expansion is adiabatic, what are (c) the final pressure and (d) the work done by the gas? (a) Number 1.867 Units atm (b) Number 278.73 Units (c) Number 0.962 Units atm (d) Number 203.76 Units