A fancy multifluid manometer is employed to measure the pressure of acetonitrile in the pipe. All the fluids inside the manometer are assumed to be totally immiscible with each other. Diethyl ether Pgauge =? (SG = 0.713) Heptane (SG = 0.684) 58.63 P P. 3.4 x 10-5 km Helium 5.4 cm 6 Pipe Ppipe = ? 75 mm Acetonitrile (SG = 0.786) 67 mm Dimethyl sulfoxide (SG = 1.1) (a) Determine the density of diethyl ether (DEE), dimethyl sulfoxide (DMSO), heptane (Hept), and acetonitrile (Ace). [4 marks] (b) Calculate the pressure at points 5 and 6. [6 marks) (c) Calculate the value of unknown height labelled "y" cm if the pressure difference between gauge pressure and pressure at the midpoint of the pipe is 525.08 Pa. [4 marks] (d) Calculate the pressure at points 1, 2, and 3. [6 marks)