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45 g of water at 50∘C in a beaker is cooled when 50 g of copper at 18∘C is added to it.The contents are stirred till a final constant temperature is reached.Calculate the final temperature.The specific heat capacity of copper is 0.39 Jg−1 K−1 and that of water is 4.2 Jg−1 K−1.State the assumption used.

Answer»

45 g of water at 50C in a beaker is cooled when 50 g of copper at 18C is added to it.The contents are stirred till a final constant temperature is reached.Calculate the final temperature.The specific heat capacity of copper is 0.39 Jg1 K1 and that of water is 4.2 Jg1 K1.State the assumption used.



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