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  4. How many grams of ice at 0 oC can be melted by the addition of 500 J of heat? (The molar heat of fusion for ice is 6.02 kJmol- 1 )

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Q. How many grams of ice at $0 \,{}^{o}C$ can be melted by the addition of 500 J of heat? (The molar heat of fusion for ice is $6.02 \, kJmol^{- 1}$ )

NTA AbhyasNTA Abhyas 2020Thermodynamics

Solution:

As 6020 J is required to melt 18 g of ice at 0oC

So, 1 J would melt $=\frac{18}{6020}g$ of ice at $0 ^{o}C$ $\approx 3\times 10^{- 3}g$

Hence 500 J would melt $=500\times 3\times 10^{- 3}$ g of ice at $0 ^{o}C$ $=$ 1.5 g