1. The problem statement, all variables and given/known data A piece of metal at 80C is placed into 1.2L of water at 72C. This thermally isolated system reaches a final temperature of 76C. Estimate the overall change of entropy for this system. 2. Relevant equations deltaS = Q/T Q=m*c*deltaT 3. The attempt at a solution I think that i have to find Q for metal and water separately. correct? and if so i dont know how to find Q for the metal because i dont have its mass or what kind of metal it is to know its heat capacity. does anyone have any suggestions?