Physics · Oct / Nov 2021 · Paper 12 · Question 19
5054Melting, boiling and evaporation
The graph is the temperature–time graph for a sample of wax that is heated so that it melts. The mass of the wax is 200 g. Thermal energy is supplied to the wax at a constant rate of 12 000 J / minute. What is the specific latent heat of fusion of the wax?
- A180 J / g
- B240 J / g
- C480 J / g
- D600 J / g
As printed in the paper
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Correct answer: B. 240 J / g
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