1979B5. Four samples of ideal gas are each initially at a pressure `Po` and volume `Vo`, and a temperature `To` as shown on the diagram above. The samples are taken in separate experiment from this initial state to the final states I , II, III, and IV along the processes shown on the diagram.
a. One of the processes is isothermal. Identify which one and explain.
b. One of the processes is adiabatic. Identify this one and explain.
c. In which process or processes does the gas do work? Explain.
d. In which process or processes is heat removed from the gas? Explain.
e. In which process or processes does the root-mean-square speed of the gas molecules increase? Explain.