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Question

You inadvertently leave a pan of water boiling away on thehot stove. You return just in time to see the last drop converted into steam. The pan originally held 1.00 L of boiling water. What is the change in entropy of the water associated with its change of state from liquid to gas?

A
6.05
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B
8.15
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C
7
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D
6.05 kJ/K
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Solution

The correct option is D 6.05 kJ/K
SH2O=QabsorptionbyH2OTQ=mLV=ρVLVSH2O=ρVLVT=(1kgL)(1L)(2257kJkg)373K=6.05kJ/K

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