1. The problem statement, all variables and given/known data A 37 g ice cube at 0.0°C is added to 110 g of water in a 62 g iron cup. The cup and the water have an initial temperature of 40°C. (a) Find the equilibrium temperature of the cup and its contents. 2. Relevant equations I think a relevant equation is (m Lsubf) + (mc delta T) + (mc delta T) 3. The attempt at a solution I am completely lost, I started out (.110kg)(4.186 j/ kg c) (T-40) + (.037)(2090 j/ kg c)(T-0) + (.062) (448 j/kg c) (T-40) , I think I have most the units correct, I just don't know the correct equation for the problem or maybe what to do with all the units. Help please, am I using the correct equation? am I missing units? What is L sub f ? I added the like units and mutiplied them then divided by T value to get T: (.209kg)(2542.186 j/kg c)/80 and got T= 6.64 C. This came up as incorrect and I was wondering if anyone could tell me what I did wrong?