What is the mass of a silver bar taken at a temperature of 962 ° C if it can be melted by transferring 8 kJ of heat to it?

The ingot already has a melting point, it remains to destroy the crystal structure, which occurs without a further increase in temperature. The amount of heat Q required for this is equal to the product of the mass of silver m by the specific heat of fusion L:
Q = L * m;
m = Q / L = 8,000 J / 88,000 J / kg = 0.091 kg.
Answer: 0.091 kg (91 g).