Problem 9: Arigid tank of volume 0.1 m3 is filled from a supply line at 127C and 2 bar, as drawn in the following figure. It is initially at vacuum. The valve is opened, and the tank fills until the pressures equilibrate. The valve is then shut. During this process, 6,000 Joulrd of heat transfers to the surroundings. The final temperature in the tank is 227C. The surroundings are at 27C. What is the entropy change of the universe for this process? Take the heat capacity to be constant: Cp = (2)R. (Ans: 51.23 ] /K) Ideal Gas Ideal Gas Tin=127C R T, =127C _ Pin = 2 bar Pin = 2 bar Toun=27C Tour =27C Initially Viacuum Ideal Gas P, =2 bar V=0.1m3 Vit g T,=227C State 1 State 2