The mass of compressed air in a 210-L steel tank is determined by weighing the tank plus its contents and then subtracting the known weight of the empty tank. The mass of compressed air in the tank is...

The mass of compressed air in a 210-L steel tank is determined by weighing the tank plus its contents and then subtracting the known weight of the empty tank. The mass of compressed air in the tank is found to be equal to 3.2 kg. If the tank is located in a room where the temperature is maintained at 25◦C, estimate the pressure of the air in the tank.