ammonia and hydrogen peroxide react to produce hydrazine (N2H4) and water according to: | Cheap Nursing Papers

ammonia and hydrogen peroxide react to produce hydrazine (N2H4) and water according to:

deltaH= -571.6kJ

My answer was -800.6 kJ and it was marked partially wrong, however, I honestly dont know how to approach this problem. I added all of the numbers together. Please show me explanations if possible thanks!

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