Using Hess's Law and Calorimeter, please explain and show work.

- Given the following data, calculate the enthalpy of formation of H2O2. H2(g) + 1/2O2 (g) H2O (1) AH = -286 kJ H,02 () H2O (1) + 12 02 (g) AH = 99 kJ During an actual run with the calorimeter, there are two important criteria which must be satisfied by a correctly positioned thermometer. What are these two criteria? If a temperature vs. time curve gives a AT of 10.0C and you assume that all the heat produced has been absorbed by 100. grams of water. How many joules of heat have been produced