What amount of heat is required to melt scrap iron weighing 0.5 tons heated with water to the melting point?

univerkov | May 7, 2021 | education

Initial data: m (weight of scrap iron) = 0.5 t; scrap iron is at its melting point.

Reference values: λ (specific heat of fusion of iron) = 2.7 * 10 ^ 5 J / kg.

SI system: m = 0.5 t = 0.5 * 10 ^ 3 kg.

The amount of heat required to melt scrap iron can be calculated using the formula: Q = λ * m.

Let’s perform the calculation: Q = 2.7 * 10 ^ 5 * 0.5 * 10 ^ 3 = 1.35 * 10 ^ 8 J or 135 MJ.

Answer: To melt scrap iron, 135 MJ of heat is required.

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