1. The problem statement, all variables and given/known data Because heat is absorbed from the calorimeter from an endothermic dissolving process, is the calculated enthalpy of solution more positive or more negative from what it should be? 3. The attempt at a solution I though it would be more positive because an endothermic reaction is one in which the heat goes into the system, causing the enthalpy to increase. But, somewhere I read that if you have an endothermic reaction, the calorimeter would release some heat; ΔH(total) that looks only at the heat of the mixture would give a less positive number (or less negative number).