piston engine

The cylinder of a piston engine contains an ideal gas whose molecules have five degrees of freedom apiece. The gas initially has volume 0.2 × 10-3 m3, pressure 5 × 105 Pa, and temperature 600 °C. It is then expanded to a volume 1.0 × 10-3 m3. Calculate the heat added ?Q and the work done ?W if the expansion is (a) isothermal, (b) isobaric, (c) adiabatic.