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July 28, 2015

Homework Help: Physic

Posted by Alice on Friday, May 6, 2011 at 11:16am.

Assume all temperatures to be exact.
An aluminum spoon at 84 degree C is placed in a Styrofoam cup containing 0.180 kg of water at 12 degree C. If the final equilibrium temperature is 21 degree C and no heat is lost to the cup itself or the environment, what is the mass of the aluminum spoon?

Please help!

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