How much energy will it take to melt 2 kg of steel taken at 1500 ° C?

Task data: m (mass of steel to be melted) = 2 kg; t (initial steel temperature) = 1500 ºС (we will assume that melting will begin at this temperature).

Reference values: λ (specific heat of fusion of steel) = 0.84 * 10 ^ 5 J / kg.

The consumed thermal energy for melting 2 kg of steel is calculated by the formula: Q = λ * m.

Calculation: Q = 0.84 * 10 ^ 5 * 2 = 1.68 * 10 ^ 5 J = 168 kJ.

Answer: It takes 168 kJ of energy to melt 2 kg of steel.




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