ng ng X- n, d g at e e J d e e t S Vaals 6-23. This problem is a variation on Problem 4-16, in which pressure was in the range 0.05 to 0.1 MPa, and we used the ideal gas model. Here we explore a similar process with higher pressures and a real gas model. tially the gas is at P = 0.5 MPa and T Ten moles of gas are placed in a rigid container. Ini- = 300 K, and the T container is also at T = 300 K. The container is placed in a furnace, where its surroundings are at a constant = 600 K. The container is left in the furnace until both the container and the gas reach thermal equi- librium with the surroundings. The gas is described by the van der Waals equation of state, with a = 0.08 m' Pa/mol and b = 0.0001 m/mol, and has an ideal gas heat capacity of C = 2.5R. The container it- self has a mass of 10 kg (not including the mass of the gas inside) and a heat capacity of C, = 1.5 J/g. K. A. Find the heat added to the gas. B. Find the heat added to the container. C. Find the change in entropy of the gas. D. Find