A frictionless piston-cylinder apparatus contains saturated H2O at 212 °F where 80% of the volume is occupied by vapor and 20% by liquid. The piston initially rests on stops. Heat is added until the pressure reaches 100 psia, at which point the piston lifts off the stops and the system expands. More heat is added until all of the liquid is just converted to vapor. For this process, a) Draw a P-v diagram labeling the initial and final states, and including the vapor dome on the diagram, b) Determine the quality when piston first lifts off of the stops.