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12.0 g of aluminum at 200∘C and 19.0 g of copper are dropped into 45.0 cm3...

12.0 g of aluminum at 200∘C and 19.0 g of copper are dropped into 45.0 cm3 of ethyl alcohol at 15.0∘C. The temperature quickly comes to 24.0 ∘C.

What was the initial temperature of the copper in ∘C?

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