How Much Energy (KJ)is Released When 15 $\rarr$ Al₂O₃(s)+ 2Fe(l) $\Delta$ H° = - 822

question 6

Multiple Choice

How much energy (kJ) is released when 15.0g of Fe(l) is produced in the thermite reaction: 2Al(s) + Fe₂O₃(s) $\rarr$ Al₂O₃(s) + 2Fe(l) $\Delta$ H° = - 822.8 kJ/mol

• A)12,300 kJ
• B)221 kJ
• C)110.kJ
• D)6,170 kJ
• E)54.8 kJ

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