An insulated piston-cylinder device initially contains 0.3 m^3 of carbon dioxide at 200 kpa and 27 ∘ c. an electric switch is turned on, and a 110-v source supplies current to a resistance heater inside the cylinder for a period of 10 min. the pressure is held constant during the process, while the volume is doubled. determine the current that passes through the resistance heater.

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.