Question 3 of 15 What is an isolated system?
A. The system in which collisions always occur
B. The intergalactic highway system
C. A collection of matter that does not interact with anything else in the universe
D. The forces that act upon an object in a collision

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).