Homework Help: Chemistry

Posted by Matt on Saturday, November 17, 2012 at 11:06pm.

A 35.0-g iron rod, initially at 25.6°C, is submerged into an unknown mass of water at 67.7°C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 63.5°C. What is the mass of the water?

Chemistry - DrBob222, Sunday, November 18, 2012 at 12:23am
[mass rod x specific heat rod x (Tfinal-Tintial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0
Substitute and solve for the only unknown, mass H2O.
Chemistry - matt, Monday, March 25, 2013 at 7:18pm
28.014 g

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