# What amount of heat is required to melt zinc with a mass of 2.5 kg, the specific heat of fusion of zinc

May 27, 2021 | education

| **What amount of heat is required to melt zinc with a mass of 2.5 kg, the specific heat of fusion of zinc is equal to 120,000 J / kg.**

Given: m (mass of zinc for melting) = 2.5 kg; the initial temperature is not specified, therefore, for the calculation, we assume that zinc is taken at the melting point.

Reference data: according to the condition, we take λ (specific heat of fusion of zinc) = 120,000 J / kg.

To calculate the required heat, we will use the formula: Q = λ * m.

Calculation: Q = 120,000 * 2.5 = 300,000 J (300 kJ).

Answer: You will need 30 kJ of heat.

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