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11 Nov 2019
A hot rock (the System, 1.0 kg, 200°C) is thrown into a bucket of water (the Surroundings, 10.0 liters, 15°C). 1) Calculate the entropy change of the System, the Surroundings, and the Universe. An energy balance will be useful. What do the System and Surroundings have in common? Qutside (28C or 45°C) In a generic heat engine, spontaneous heat flow from hot to cold is used to expand a fluid, which does work. A refrigerator represents the same process in reverse: work performed on a pump circulates a fluid (Freon), which forces heat to flow âuphill' from cold to hot. (In some applications this is known as a "heat pump".) compresso -work Whether the machine is running as an engine or refrigerator, the Carnot analysis remains true inside (25°c) work 1-low high (although ε does not have the same interpretation). The negative sign is necessary for strict adherence to the chemsit's sign convention for heat and work.
A hot rock (the System, 1.0 kg, 200°C) is thrown into a bucket of water (the Surroundings, 10.0 liters, 15°C). 1) Calculate the entropy change of the System, the Surroundings, and the Universe. An energy balance will be useful. What do the System and Surroundings have in common? Qutside (28C or 45°C) In a generic heat engine, spontaneous heat flow from hot to cold is used to expand a fluid, which does work. A refrigerator represents the same process in reverse: work performed on a pump circulates a fluid (Freon), which forces heat to flow âuphill' from cold to hot. (In some applications this is known as a "heat pump".) compresso -work Whether the machine is running as an engine or refrigerator, the Carnot analysis remains true inside (25°c) work 1-low high (although ε does not have the same interpretation). The negative sign is necessary for strict adherence to the chemsit's sign convention for heat and work.
Nelly StrackeLv2
15 Sep 2019