1. The problem statement, all variables and given/known data A 5.0g piece of iron at 75.0C is added to 150.0g of water at 15.0C. What is the final temperature of the iron and the water? (use c=0.444J/g*C for iron). 2. Relevant equations Q = mc(T2-T1) 3. The attempt at a solution In all honesty, I have no idea how to start this question at all. Most of the other questions on this assignment deal with enthalpy changes, but this one seems to be missing some information that is needed to solve it. Previous questions generally gave another variable, like the Q (heat change) value for either one of the iron or the water. Yet, I am missing more than 2/3 of the variables in the Q=mcdeltaT formula, so I have no idea what I can calculate. If anyone can point me in the right direction (for a hopefully straightfoward problem), it would be much appreciated. Thanks.