The Heat of Formation of Fe₂O₃(s) Is -826 KJ/mol

question 50

Multiple Choice

The heat of formation of Fe₂O₃(s) is -826 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 3O₂(g)  2Fe₂O₃(s) when a 18.6 g sample of iron is reacted.

• A) -551 kJ
• B) -138 kJ
• C) -96.3 kJ
• D) -826 kJ
• E) -275 kJ

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