3. A compressor fills a tank with air at a service station. The inlet air temperature is Kin3 300 K, and the pressure is 100 kPa, the same conditions as for the initial air in the tank with a mass of 0.8 kg. After 1 kg of air is pumped into the tank, the pressure gnibnuom reaches 300 kPa, and the temperature is 400 K. How much heat was added to or enco Extremoved from the tank during the compression? Hint: Do not forget the initial Tol amount of air in the tank.

3. A compressor fills a tank with air at a service station. The inlet air temperature is 300K, and the pressure is 100kPa, the same conditions as for the initial air in the tank with a mass of 0.8kg. After 1kg of air is pumped into the tank, the pressure reaches 300kPa, and the temperature is 400K. How much heat was added to or removed from the tank during the compression? Hint: Do not forget the initial amount of air in the tank. Data for the air