Question: Argon gas is approaching a convergingdiverging nozzle with a low velocity at 20C and 120 kPa, and it leaves the nozzle at a supersonic velocity.

Argon gas is approaching a converging–diverging nozzle with a low velocity at 20°C and 120 kPa, and it leaves the nozzle at a supersonic velocity. If the cross-sectional area of the throat is 0.015 m2, the mass flow rate of argon through the nozzle is
(a) 0.41 kg/s
(b) 3.4 kg/s
(c) 5.3 kg/s
(d) 17 kg/s
(e) 22 kg/s

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