7-Nitrogen is present in a closed system at a pressure of 830 kPa and a temperature of 380°C. If nitrogen is expanded isentropically to a pressure of 115 kPa, which of the following will have the lowest temperature? (take cazo = 1.4)  A) 308,7 K  B) 371,2 K  C) 220,6 K  D) 216,0 K  E) 310,4 K

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