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Find out the amount of work done to conv...

Find out the amount of work done to convert 100 g ice at `0^(@)C` to water at `100^(@)C`. (Latent heat of fusion of ice = `80 cal cdot g^(-1)`, mechanical equivalent of heat = `4.2 J cdot cal^(-1))`.

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Total heat supplied,
`H = 100 xx 80 + 100 xx 1 xx (100-0)`
`= 8000 + 10000 = 18000 cal`
`:.` Work done, `W = JH = 4.2 xx 18000 = 75600 J`.
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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-CBSE SCANNER
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