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A 0.600kg sample is placed in a cooling ...

A 0.600kg sample is placed in a cooling apparatus that removes energy as heat at a constant rate. Figure gives the temperature T of the sample versus time t, the horizontal scale is set by `t_(s) = 80.0` min. The sample freezes during the energy removal. The specific heat of the sample in its initial liquid phase is 3000`J//kg.K`. What are (a) the sample's heat of fusion and (b) its specific heat in the frozen phase ?

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The correct Answer is:
(a) 67500J `// kg ~~ 68 kJ //kg; ` (b) 2.3 kJ `//`kg. `""^(@)C`
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