Air flows isentropically through a converging-diverging nozzle from a large tank containing air at \(250^{\circ} \mathrm{C}\). At two locations where the area is \(1 \mathrm{~cm}^{2}\), the static pressures are \(200 \mathrm{kPa}\) and \(50 \mathrm{kPa}\). Find the mass flow rate, the throat area, and the Mach numbers at the two locations.