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1 Kg of ice at -20^(@)C is mixed with 2 ...

1 Kg of ice at `-20^(@)C` is mixed with 2 Kg of water at `90^(@)C`. Assuming that there is no loss of energy to the environment, what will be the final temperature of the mixture ? (Assume latent heat of ice = `334.4` KJ/Kg, specific heat of water and ice are `4.18 kJ//(kg.K)` and `2.09 kJ//(kg.K)`, respectively.)

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