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May 4, 2015

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Posted by andrea on Monday, October 18, 2010 at 5:17pm.

A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 14.0 g to 100C in boiling water and then dropped the hot coin into 29.5 g of water at T = 15.0C in an insulated coffee-cup, and measured the rise in temperature. If the coin was really made of silver, what would the final temperature of the water be (in C)? (for nickel, s = 0.445 J/gC; for silver, s = 0.233 J/gC )

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