A sheet of gold of mass 100g and a teperature of 18.0 degrees is placed flat on a sheet of iron weighing 20g and at a temperature of 55.6 degrees. what is the final temperature of the combined metal.

1 answer

heat lost by Fe + heat gained by Au = 0

[mass Fe x specific heat Fe x (Tfinal-Tinitial)] + [mass Au x specific heat Au x (Tfinal-Tinitial)] = 0
Solve for Tfinal.