Determine the Heat Given Off to the Surroundings When 9 $\rarr$

question 66

Multiple Choice

Determine the heat given off to the surroundings when 9.0 g of aluminum reacts according to the equation 2Al + Fe₂O₃ $\rarr$ Al₂O₃ + 2Fe, $\Delta$ H ^$\circ$ _rxn= -849 kJ/mol.

• A) 1.4 * 10² kJ
• B) 2.8 * 10² kJ
• C) 5.6 * 10² kJ
• D) 2.5 * 10³ kJ
• E) 7.6 * 10³ kJ

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