2.25 kg of a fluid having a volume of 0.1 m^3 are contained in a cylinder at constant pressure of 7 bar. Heat energy is supplied to the fluid until the volume becomes 0.2 m^3. If the initial and final specific enthalpies of the fluid are 210 kj/kg respectively.
Determine:
A. the quantity of heat energy supplied to the fluid.
B. the change in internal energy of the fluid.