20 kg of water occupy a volume of 1 m^3 in a piston cylinder device at a pressure of 45 bars. The system is compressed in a reversible process to 100 bars. Under these conditions the water cannot be assumed to behave like an ideal gas. a) Determine the final temperature of the water. Calculate the work and heat in kJ involved during the process assuming a pressure-volume relationship that can be represented by the equation PV^1.8=contant b) A large block of mass is now used to compress the water to get to the same final state as part a. Determine the final temperature of the water. Calculate the work and heat involved during this process.