Question

A 542-g piece of copper tubing is heated to 89.5 degrees Celcius and placed in an insulated vessel containing 159 g of water at 22.8 degrees Celcius. Assuming no loss of water and a heat capacity for the vessel of 10.0 J/K, what is the final temperature of the system (c=0.387 J/g*K)?
[mass copper x specific heat Cu x (Tfinal-Tinitial)] + [mass water x specific heat water x (Tfinal-Tinitial)] + [heat capacity vessel x 10 J/K] = 0
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