A4 m^3 rigid, insulated tank initially contains air at 90 kpa and 17°c. the tank is connected to a supply line through a valve. air is flowing in the supply line at 700 kpa and 37°c. the valve is opened, and air is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. determine a. the mass of air that entered the tank, in kg. b. the final temperature in the tank, in °c