a 1m^3 tank is to be filled using nitrogen at 300K and 20MPa.

a 1m^3 tank is to be filled using nitrogen at 300K and 20MPa. Instead of using a valve to throttle the nitrogen in the tank, a reversible turbine is put in the line to get some work out of the pressure drop. if the pressure in the tank is initially zero, and the final pressure is 20MPa, what will be the final temperature in the tank? how much work will be accomplished over the course of the entire process?