R-134a, flowing at 25o C and 750 kPa with negligible kinetic energy in a 5 mm diameter tube is throttled

R-134a, flowing at 25o C and 750 kPa with negligible kinetic energy in a 5 mm diameter tube is throttled (i.e., pressure reduced) to a pressure of 165 kPa. You are asked to find the exit temperature and the exit pipe diameter so that the velocity stays constant. Follow the following steps.

all info and Q in attached file