1. The problem statement, all variables and given/known data My book says that bomb calorimeters are used to measure ΔE while coffee cup calorimeters are used to measure ΔH. Isn't ΔE for bomb calirometers the same as ΔH? 2. Relevant equations 3. The attempt at a solution Bomb Calorimeter: ΔH = ΔE + PΔV = ΔE (since, constant volume). So ΔH = ΔE. So does that mean no work is done in bomb calorimeters and the change in energy is entirely due to the transfer of thermal energy?