1. The 250 litre cylinder of a steam train contains superheated steam at 300C and 10 atm. Assuming CV = 3R calculate (a) find numerical values for the specific heat of the steam at constant volume and at constant pressure i.e. find numbers in SI units. (b) the number of moles of the steam in the cylinder. (c) the amount of heat released as the steam cools down to 100C if the piston is free to move, and we assume that the pressure remains constant. (d) the amount of heat released as the steam cools down to 100C if the piston is held in a fixed position