How much energy is needed to liquidize 3 kg of paraffin at its melting point?
| February 11, 2021 | education
Since the paraffin is taken at the melting point, the energy required for the conversion of paraffin into liquid is calculated using the following formula:
Q = λ * m, where λ is the specific heat of melting of paraffin (tabular value, λ = 1.5 * 10 ^ 5 J / kg), m is the specified mass of paraffin (m = 3 kg).
Let’s do the calculation:
Q = λ * m = 1.5 * 10 ^ 5 * 3 = 4.5 * 10 ^ 5 J = 450 * 10 ^ 3 J = 450 kJ.
Answer: To convert 3 kilograms of paraffin into a liquid, 450 kJ of energy is needed.
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