0.5kg of water at 10oC is completely converted to ice by extracting 188000J of heat...

WAEC 1988

0.5kg of water at 10^oC is completely converted to ice by extracting 188000J of heat from it. If the specific heat capacity of water is 4200J kg^-1C^-1, calculate the specific latent heat of fusion of ice.

A. 9.0 KJ kg^-1
B. 84.0 KJ kg^-1
C. 168.0 KJ kg^-1
D. 334.0 KJ kg^-1
E. 336.0 KJ kg^-1

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Correct Answer: Option D

Explanation

Q = mcΔθ = (0.5 x 4200 x 10) + 0.5L
L = 334000

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0.5kg of water at 10oC is completely converted to ice by extracting 188000J of heat...

Correct Answer: Option D

Explanation

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