9- Air enters an insulated diffuser operating at steady state with a pressure of 1 bar, a temperature of 300 K, and a velocity of 250 m/s. At the exit, the pressure is 1.13 bar and the velocity is 140 m/s. Potential energy effects can be neglected. Using the ideal gas model, determine (a) The ratio of the exit flow area to the inlet flow area. (b) The exit temperature, in K. Useful I data: Y = C/C 1.4 Gas Molar mass- M-, kg/k mol 28.97 Air 32 1.4 en Butane (C.H10) Nitrogen (N2) Methane (CH.) 58 1.1 28 1.4 16 1.32 Universal gas constant = 8.314 kJ / kmol. K 1 bar = 100 kPa For liquid water h = 4.18 *t, kJ/kg where t in C Water density 1000 kg/m