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23 Nov 2019

1. An ice cube at 0.0°C is slowly melting. What is thechange in theice cube’s entropy for each 1.00 g of ice thatmelts?


2. A reversible engine with an efficiency of 30.0% has TC=310.0 K. (a) What is TH? (b) How much heat is exhausted forevery0.100 kJ of work done?

3.A heat engine takes in 125 kJ of heat from a reservoir at815K and exhausts 82 kJ to a reservoir at 293 K. (a) What istheefficiency of the engine? (b) What is the efficiency of anidealengine operating between the same two reservoirs?

4.A monatomic ideal gas follows the cyclic process shown inthefigure. The temperature of the point at the bottom left ofthetriangle is 470.0 K. (a) How much net work does this engine dopercycle? (b) What is the maximum temperature of this engine? (c)Howmany moles of gas are used in this engine?

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