Asked by Anonymous

A piece of copper ball at 80 degree Celsius is quickly transferred into a copper calorimeter of mass 60g containing 200g of water at 25 degree celcuis . If the final temperature of the mixture is 55 degree celcuis .caculate the mass of the copper ball (ignore heat loss, take the shc of copper as 400 jk|k and that of water as 4200jklk
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