1. The problem statement, all variables and given/known data The following data is obtained: Weight of ice cube added 20 g Weight of copper calorimeter 80.5 g Weight of water in calorimeter 105 g Initial temp of ice cube -18 deg C Initial temp of water 23 deg C Final temp of water 6 deg C Specific Heat Capacity copper 385 J kg-1K-1 Specific Heat Capacity water 4185 J kg-1K-1 Specific Latent Heat Fusion of Ice 335 kJ kg-1 Calculate a value for the Specific Heat Capacity of ice in J kg-1K-1. 2. Relevant equations Q= Mass x Specific Heat Capacity x change in temperature 3. The attempt at a solution I've tried countless attempts and literally spent hours trying to work this out, all have pointed to dead ends and I really don't know what else to try... 20g = 0.02kg 335kJ = 335000 J 105g = 0.105kg (0.02kg x 335000J kg-1) + (0.02kg x c) x (6 - -18) = (0.105kg x 4185J kg-1K-1) x (23 - 6) 6700 + (0.02 x c) x 24 = 439.425 x 17 6700 + (0.02 x c) x 24 = 7470.225 0.02 x c x 24 = 770.225 c = 770.225 / (0.02 x 24) c = 1604.635 J kg-1K-1 Now, I need to work out the SHC of ice which, pre-calculations, we should know it as being around 2000-2100, right? So surely that should mean 1604 is incorrect? I've really got no idea what to do anymore, should I have included the SHC of copper and the mass of the calorimeter into the equation somewhere too? Any help would be appreciated!