How much energy will be released during the solidification of 0.5 tons of iron taken at a temperature of 1539’C?

univerkov | July 25, 2021 | education

Initial data: m (mass of crystallizing iron) = 0.5 t; t0 (iron temperature, corresponds to the melting point) = 1539 ºС.

Reference data: L (specific heat of fusion of iron) = 270 * 10 ^ 3 J / kg.

SI system: m = 0.5 t = 0.5 * 1000 kg = 500 kg.

The amount of energy that will be released during the hardening of iron is determined by the formula: Q = L * m.

Let’s perform the calculation: Q = 270 * 10 ^ 3 * 500 = 135,000,000 J = 135 * 10 ^ 6 J = 135 MJ.

Answer: When 0.5 ton of iron solidifies, 135 MJ of energy will be released.

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