A rigid, insulated tank initially contains 0.5 kg of carbon dioxide (CO2) gas at an absolute pressure of 150 kPa and a temperature of 20 C (State 1). The gas is stirred by a paddle wheel until the absolute pressure of the gas increases to 200 kPa (State 2). Assume that the surrounding pressure is 1 bar and temperature is 20 C. Consider variable specific heats for carbon dioxide. Do not interpolate; use the closest values.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.