A) A huge reservoir of air supplies a converging-diverging nozzle with throat and exit areas of 10 cm^2 and 25 cm^2 respectively. The reservoir pressure and temperature are 150 kPa and 20C. Determine the range of back pressure over which
1. normal shocks appear in the nozzle
2. Oblique shocks form at the exit
3. Expansion waves form at the exit
4. Calculate the mass flow rate through the nozzle for the case in which a normal shock appears at the plane.
(B) Oxygen and carbon monoxide are mixed in the proportion 11 to 3 by mass. The oxygen is supplied at 7 bar and 40 C and the carbon monoxide is supplied at 1 bar and 15 C. The constituents are passed in steady flow through non-return valves to mix adiabatically at a pressure of 3 bar
Calculate
1.the final pressure of the mixture
2. the partial pressure of each constituent of the mixture