1. The problem statement, all variables and given/known data A 105.05 g ice cube at -15°C is placed in an aluminum cup whose initial temperature is 73°C. The system comes to an equilibrium temperature of 24°C. What is the mass of the cup? 2. Relevant equations Q=mc (delta T) 3. The attempt at a solution the sum of total heat in the system is equal to zero. Qice+Qaluminium cup=0 MiceCice(delta T)+MaluminiumCaluminium(delta T)=0 I solved for mass of aluminium cup, and got 0.1951 kg. But, it is wrong. Please help.