Homework 2.2 Problem 2 EGEN 324 Air in the amount of 1 kg is contained in a well-insulated, rigid vessel equipped with a stirring paddle wheel. The initial state of the air is 210 kPa and 15°C. a) How much work, in kJ, must be transferred to the air with the paddle wheel to raise the air pressure to 280 kPa? b) What is the final temperature of the air? Answer a) Air 1 kg 210 kPa 15°C. m=1 kg P=210 KP b) T=15% 1st Law f W