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Question
A solid of mass 80 g and at 80°C melts completely to form liquid at 80°C by absorbing 640 J of heat energy. What is the sp. latent heat of fusion of solid?
Numerical
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Solution
Given: m = 80 g; Q = 640 J
Heat absorbed during melting is (Q) = mL
L = `Q/m`
= `640/80`
= 8 J g−1
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