0.5 m3 of nitrogen at 400 kPa and 27?C is contained in a vessel kept insulated from the atmosphere. A heater within the device is turned on and allowed to pass a current of 2A for 5 min from a 120V source. Thus, electrical work is done to heat the nitrogen gas. Find the final temperature for nitrogen in the tank. CP for nitrogen gas is 1.039 kJ kg/K.