im reviewing for my final in a few days an although this is a basic question i cant work out the correct answer for some reason. and i know i started the other thread below this one but i figured this was a different topic so the heading should be different lol 1. The problem statement, all variables and given/known data A heat transfer of 8.8 x 10^5 J is required to convert a block of ice at -13°C to water at 13°C. What was the mass of the block of ice? 2. Relevant equations Q=mc(ice)(tf-ti) + mLf + mc(water)(tf-ti) 3. The attempt at a solution i tried: 8.8x10^5= m(2220)(13) + m(333) + m(4190)(13) i come out with the 10.52kg which is not correct. can someone help pinpoint what i am doing something wrong? thanks!