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A 60-g cube of ice,initially at 0.0°C,is dropped into 250 g of water in an 80-g aluminum container,both initially at 20°C.What is the final equilibrium temperature? (Specific heat for aluminum is 900 J/kg⋅°C,the specific heat of water is 4 186 J/kg⋅°C,and Lf = 3.33 × 105 J/kg. )
Pretest
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