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A molten metal of mass 150 g is kept at ...

A molten metal of mass 150 g is kept at its melting point `800^@`C. When it is allowed to freeze at the same temperature, it gives out 75,000 J of heat energy.
(a) What is the specific latent heat of the metal ?
(b) If the specific heat capacity of metal is 200 J `kg^(-1) K^(-1)`, how much additional heat energy will the metal give out in cooling to `- 50^@`C ?

Text Solution

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(a) 500 J `g^(-1)`, (b) 25,500 J
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