How much mass flowed into tank and what is final temperature

Question

At 100 lbf/in2, saturated vapor H2O flows in a pipe. A valve is opened to vent a small amount to the atmosphere. Assuming no changes in kinetic energy and no heat transfer, what is the temperature as it leaves the valve? A line with ammonia that flows at 180 psi, 140^oF is attached by a valve to a tank. The tank initially has ammonia is stored in it at 20 psi, 80oF in a 20-ft3 tank The valve is opened, and mass flows in until the tank is half full of liquid, by volume at 80^oF. What is the heat transferred from the tank during this process. An evacuated 1-ft3 tank is connected by a valve to an air supply line flowing air at 120 psi and70^oF. A valve is opened allowing air to flow into the tank until the pressure reaches 90 psi. How much mass flowed into the tank and what is its final temperature? Assume the process is adiabatic.