Physics
posted by Seth .
A 400g block of copper at a temperature of 85°C is dropped into 300 g of water at 33°C. The water is contained in a 250g glass container. What is the final temperature of the mixture?

The sum of heats gained is zero.
masswater*c*(Tf33)+masscopper*c.cu*(Tf85)=0
solve for Tf
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