How much energy is evolved during the formation of 296 g of Fe,according to the reaction below? Fe₂O₃(s)+ 2 Al(s)→ Al₂O₃(s)+ 2 Fe(s)ΔH°_rxn= -852 kJ A) 2.26 × 10³ kJ B) 5.50 × 10³ kJ C) 5.60 × 10³ kJ D) 8.80 × 10² kJ E) 6.60 × 10² kJ

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Quizplus · Accepted Answer

The reaction produces 2 moles of Fe with an enthalpy change of -852 kJ. The molar mass of Fe is 55.85 g/mol, so 296 g of Fe is approximately 5.3 moles. Since 2 moles of Fe release 852 kJ, 5.3 moles will release approximately 2.26 × 10^3 kJ.

How Much Energy Is Evolved During the Formation of 296