Asked by Anonymous

In a three reactions system the first two reactions are endothermic with DeltaH values of 138kj and 241kj. if the final reaction is exothermic what is the minimum value of DeltaH3 that would make the overall reaction exothermic? explain your reasoning.

i beleive the minimum value of DeltaH3 would be -379 because if the final reaction is exothermic it would be releasing the heat absorbed?