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Posted by college on Sunday, July 4, 2010 at 8:34am.

You have a mass of hot water at 90 C and twice the mass of cool water at 10C. The hot and cold water are mixed together. Will the final temperature be midway between 10C and 90C, closer to 90C, or closer to 10C? Explain your reasoning.

What do you think? You started out with more cold water than hot. If the amounts of cold and hot would have been equal, the equilibrium temperature would be 50C (halfway between 10 and 90).

that makes sense i just didn't think it could be that easy

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