1. The problem statement, all variables and given/known data What is the energy released as water changes temperature from 20C to -10C? 2. Relevant equations mct+lfm+mct 3. The attempt at a solution My physics exam is day after tomorrow, however, I have no clue about this question. I was away for a week during these lessons. Can someone please walk me through the question so I can understand. Thank you very much.