Physics

An unknown mass of a certain solid, initially at
60⁰C, is heated at a uniform at a uniform rate.
After 4.0 min the solid reaches its melting point
of 80⁰C, and it remains at that temperature for
3.0 min until completely melted. After a further
6.0 min of heating, the resulting liquid is at 145C. if the specific heat of the substance in the solid state is 1.8 KJ/KgC, find:
a. latent heat of fusion of the substance
b. its specific heat in the liquid substance

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