During a liquid-to-solid phase change of a substance, its change in entropy is – 4.19 x 103 J/K. If 1.67 x 106 J of heat is removed in the process, what is the freezing point of the substance in degrees Celsius?
Answer to relevant QuestionsIn an isothermal expansion at 27 oC, an ideal gas does 60 J of work. What is the change in entropy of the gas? Two large heat reservoirs at temperatures 200 oC and 60 oC, respectively, are brought into thermal contact, and 1.50 x 103J of heat spontaneously flows from one to the other with no significant temperature change. (a) The ...A heat engine with a thermal efficiency of does 500 J of net work each cycle. How much heat per cycle is lost to the low-temperature reservoir? A refrigerator with a COP of 2.2 removes 4.2 x 105 J of heat from its interior each cycle. (a) How much heat is exhausted each cycle? (b) What is the total work input in joules for 10 cycles? While doing 500 J of work, an ideal gas expands adiabatically to 1.5 times its initial volume. (a) The temperature of the gas (1) increases, (2) remains the same, (3) decreases. Why? (b) What is the change in the internal ...
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