An 10 g ice cube at -13˚C is put into a Thermos flask containing 115 cm3 of water at 20˚C. By how much has the entropy of the cube-water system changed when a final equilibrium state is reached? The specific heat of ice is 2200 J/kg K and that of liquid water is 4187 J/kg K. The heat of fusion of water is 333 × 103 J/kg.
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