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Question
What mass of ice at 0°C will be required to cool 0.9 kg of water from 35°C to 0°C? Assume all the ice used melts. The specific heat capacity of water is 4.2 x 103 J/kgoC and specific latent heat of fusion of ice is 336 x 103 J/kg.
Solution
Heat gained by ice at 0°C to oonvert to water at 0°C = Heat lost by water to change the temperature from 35°C tD 0°C
m x 336000 = 0.9 x 4200 x 35
m x 336000 = 132300
m = 0.39 kg
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