It is known that in a Carnot power cycle that takes place on a closed system and uses 0.01 kg of water as an intermediary fluid, the highest temperature / lowest temperature ratio of the cycle as absolute temperature (K) is 2.5 and the net work of the cycle is 35 kJ. During the process of removing heat from the cycle, water turns from a saturated vapor state into a saturated liquid state. How much kJ/kg is the heat released during this state change ? How many degrees C is the temperature of water approximately ?