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If 3360 J of heat is required to melt 10...

If 3360 J of heat is required to melt 10 g of ice, how many kilocalories of heat should be supplied to melt 1 kg ice?

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heat required to melt 10 of ice
`=3360J=(3360)/(4.2)cal=800cal`
heat required to melt 1 g of ice=80cal
heat required tomelt 1000 g of ice=80,000 cal
`therefore80` kcal of heat is required to melt 1 kg ice.
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