How much heat is required to melt a 400 g piece of tin taken at 232 ° C?

m = 400g = 0.4kg,
t = 232 ° С
λ = 58200J / kg is the specific heat of fusion of tin;
Q -?;
Since the melting point of tin is 232 ° C, there is no need to waste heat on heating it. For melting it is necessary:
Q = m * λ = 0.4 * 58200 = 23280J.

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