To melt 2 kg of copper taken at the melting temperature, 420 kJ of heat was required.
| August 18, 2021 | education
To melt 2 kg of copper taken at the melting temperature, 420 kJ of heat was required. Determine the specific heat of fusion of copper.
To find the value of the specific heat of melting of copper, it is necessary to use the formula: Q = λ * m, from where we express: λ = Q / m.
The values of the variables: Q is the heat spent on melting (Q = 420 kJ = 42 * 10 ^ 4 J); m is the mass of taken copper (m = 2 kg).
Calculation: λ = Q / m = 42 * 10 ^ 4/2 = 21 * 10 ^ 4 J.
Answer: The specific heat of fusion of copper, according to the calculation, is 21 * 10 ^ 4 J.
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