u 5 ID Is :0 I'lmll The diagram above of pressure Pversus volume Vshows the expansion of 2.0 moles of a monatomic ideal gas from stateA to state B. As shown in the diagram, PA = P3 = 600 N/m2, VA = 3.0 m3, and VB = 9.0 m3. (a) i. Calculate the work done by the g' as it expands. ii. Calculate the change in internal energy of the gas as it expands. iii. Calculate the heat added to or removed from the gas during the expansion. (b) The pressure is then reduced to 200 N/m2 withouth changing the volume as the gas is taken from state B to state C. Indicate where on the graph state C should be located and describe the line or curve that represents the process from state B to state C. (c) The gas is then compressed isothermally back to state A. i. Describe the line or curve that represents this process. ii. ls heat added to or removed from the gas during this isothermal compression? Justify your