A 50 g ice at `0^(@)C` is added to 200 g water at `70^(@)C` taken in a flask. When the ice has melted completely, the temperatur

A 50 g ice at `0^(@)C` is added to 200 g water at `70^(@)C` taken in a flask. When the ice has melted completely, the temperature of the flask and the contents is reduced to `40^(@)C`. Now to bring down the temperature of the contents to `20^(@)C`, find a further amount of ice that is to be added.

A 50 g ice at `0^(@)C` is added to 200 g water at `70^(@)C` taken in a flask. When the ice has melted completely, the temperature of the flask and the

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