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A 2kg block of ice at 0 degrees celsius is dropped into a very large lake...

A 2kg block of ice at 0 degrees celsius is dropped into a very large lake at 25 degrees celsius and completely melts. For water, the heat of fusion is 3.35*10^5 J/kg, the heat of vaporization is 2.25*10^5 J/kg, and the specific heat is 4190 J/kg*K. What is the net change in entropy of the system consisting of cie and the lake due to this melting process?

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Answer #1

entropy = heat/temperature

temperature = 298K

heat = ml+ms[298] = 2[335000+4190*298] = 4005240J

entropy = 13440.40J/K

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