# chemistry

4 Fe(s) + 3 O2(g) 2 Fe2O3(s) ΔH = -1652 kJ
How much heat is released when 3.82 mol iron is reacted with excess O2?

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1. 1652 kJ x (3.82 moles/4 moles) = ??

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2. 1652 x (3.82 moles/4 moles) = 1577.66

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