One kilogram of ammonia, initially saturated vapor at -4°C, undergoes a constant volume process to a final pressure of 200 kPa.
a) Show the process on a T-v diagram (label axes) with respect to saturation lines, clearly labeling all states and showing the process path with an arrow.
b) Determine the temperature at the final state, in °C.
c) Calculate the heat and work for this process, each in kJ.