A. Cu and Mg
B. Cu and Su
C. Cu and Zn
D. Cu and Pb
Correct Answer: Option B
B. Cu and Su
![Water of mass 120g at 50°C is added to 200g of water at 10°C and the mixture is well stirred. Calculate the temperature of the mixture. [Neglect heat losses to the surrounding]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "Water of mass 120g at 50°C is added to 200g of water at 10°C and the mixture is well stirred. Calculate the temperature of the mixture. [Neglect heat losses to the surrounding]")
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