The below set-up is used to measure the pressure of liquid ammonia (NH3) flowing through a pipe. Properties of liquid ammonia can be find in the appendix. Po= 57 kPa Air Pipe NH3 15C NH3 h = 50 cm 15C h =8 cm hs 4=6 cm Gauge fluid (SG = 1.715) (a) Calculate the angle (8). [2 marks) (b) Calculate the heights h, and h.. [4 marks) [2 marks) [2 marks) (c) Calculate the density of gauge fluid. (d) Find the pressure of liquid ammonia inside the tank (P1). (e) Calculate the pressure of liquid ammonia in the pipe (P2). [10 marks]