Question

A mass of 0.20 kg of a substance is initially solid. It is heated at a steady rate of 500 W. The graph shows how the temperature of the substance changes with time. What is the specific latent heat of fusion of the substance?​

Answer 1

Answer:

20000 J / KG

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Answer 2

Answer: C

Explanation:

Given:

Specific Latent Heat = Energy/Mass

Energy (J) = Watts × time

Fusion of the substance = The phase transition from solid to liquid via melting

Working:

300 - 100 = 200

500 × 200 = 100 000 J

100 000 ÷ 0.20 = 500 000 J/kg