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400g of cold water is added to 200g of water at 70°C. If they are properly mixed a...


Question

400g of cold water is added to 200g of water at 70°C. If they are properly mixed and the temperature of the mixture is 300°C. calculate the initial temperature of the cold water. (Neglect the heat absorbed by the container)

Options

A) 10°C

B) 15°C

C) 20°C

D) 30°C

E) 40°C


The correct answer is A.


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