Q1) Show that work done during the vaporization of 1 kg of saturated liquid water at 200 C can be calculated in two different approaches, and calculate the work done using both approaches. [10] Q2) A well insulated 2 m gas cylinder contains air initially at 12 bars and 400 K. Calculate the maximum work that can be obtained by opening the cylinder valve. Assume air to be an ideal gas with a constant specific heat capacity of Cp = 29.3 J/mol K. Surroundings temperature and pressure are 298 K and 1 bar, respectively. [10] Q3) Nitrogen gas is being withdrawn at a rate of 0.2 mol/s from a 1.75 m cylinder. Initially, the pressure of the gas in the cylinder is 18 bar and its temperature is 300 K. The cylinder is well- insulated. What will be the temperature and pressure of the gas in the cylinder after 6 minutes? Assume Nitrogen is an ideal gas with a constant specific heat capacity. [20]