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4. 1.0 kg of water at 15 o C is in a perfectly insulating Dewar flask....

4. 1.0 kg of water at 15 o C is in a perfectly insulating Dewar flask. 200 g of ice at -10 o C is added to the water in the flask. (a) Once thermodynamic equilibrium is achieved, is there any ice left in the flask and, if so, how much? (b) What is the equilibrium temperature?

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