## Question

A copper block of mass 2 kg is heated to a temperature of 500^{o}C and then placed in a large block of ice at 0^{o}C. What is the maximum amount of ice that can melt? The specific heat of copper is 400 j and latent heat of fusion of water is .

### Solution

Heat energy in copper block The amount of ice that melts will be maximum if the entire heat energy of the copper block is used up in melting ice. Now, of heat energy is needed to melt 1 kg of ice into water. Therefore, the amount of ice melted by J of heat energy is

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