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To make Brass, a block of copper , mass 5 kg, is melted at an initial...

To make Brass, a block of copper , mass 5 kg, is melted at an initial temperature of 1,163 C, and mixed with liquid Zinc, mass 3 kg , at an initial temperature 431 C. What is the final temperature? Spec. heat of Copper and Zinc : c = 387

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