There is oxygen $($k$=1,395$ and Cp$=0\mathrm{.}918$ kJ$/$kgK$)$ that flows stationarily through a ductConvergent divergent at a rate of $3$ kg$/$s$.$ Oxygen enters the duct with a pressure of $1\mathrm{.}4$ MPa and $200\backslash$deg C atA very low speed and expands in the nose. Consider that the flow has a behaviorIsentropic and determine for the pressure of $500$ kPa