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

question 33

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°_rxn= -849 kJ/mol.

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