(b) A rigid tank with volume of 0.1 m contains 200 gram of nitrous oxide gas (N20). The gas was initially at temperature 70°C. As a result of heat loss to the surrounding, the temperature of the gas in the tank drops until it reaches thermal equilibrium with the surrounding at 30°C. Assuming the nitrous oxide to behave as an ideal gas with molecular weight of 44.013 kg/kmol and the universal gas constant to be 8.314 kJ/kmol.K, determine, i. the initial pressure of the gas in the tank (bar); the final pressure of the gas in the tank (bar); and the work done during the process (kJ). Plot the process on a temperature versus volume diagram. ii. iii. iv.

(b) A rigid tank with volume of 0.1 m contains 200 gram of nitrous oxide gas (N20). The gas was initially at temperature 70°C. As a result of heat loss to the surrounding, the temperature of the gas in the tank drops until it reaches thermal equilibrium with the surrounding at 30°C. Assuming the nitrous oxide to behave as an ideal gas with molecular weight of 44.013 kg/kmol and the universal gas constant to be 8.314 kJ/kmol.K, determine, i. the initial pressure of the gas in the tank (bar); the final pressure of the gas in the tank (bar); and the work done during the process (kJ). Plot the process on a temperature versus volume diagram. ii. iii. iv.