1.

A molten metal of mass 150 g is kept at its melpointting800°C. When it is allowed to freeze at thesame temperature, it gives out 75,000 J of heatenergy(a) What is the specific latent heat of the metal?(b) If the specific heat capacity of metal is200 J kg1 K-1, how much additional heatenergy will the metal give out in cooling to50 °C ?l 5 500J

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