How much heat is needed to melt 10 kg aluminum taken at a temperature of 660 (degrees) C.

These tasks: m (mass of aluminum for melting) = 10 kg; t (temperature of taken aluminum) = 660 ºС (for aluminum, this temperature is the temperature of the beginning of melting).

Reference data: λ (specific heat of fusion of aluminum) = 39 * 10 ^ 4 J / kg.

The amount of heat required to melt aluminum is calculated by the formula: Q = λ * m.

Let’s calculate: Q = 39 * 10 ^ 4 * 10 = 390 * 10 ^ 4 J = 3.9 MJ.

Answer: To melt 10 kilograms of aluminum, 3.9 MJ of heat is required.