4 Al (s) + 3O2 (g) → 2 Al2O3 (s) ΔHo = -3351 kJ/mol Consider the following statements about the reaction shown above. Which of the following is correct? A) Heat is released by this reaction. B) Heat is absorbed by this reaction. C) The enthalpy of formation for Al2O3 is -3351 kJ/mol. D) A & C are both correct. E) B & C are both correct.

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4 Al (s) + 3O2 (g) → 2 Al2O3 (s)     ΔHo = -3351 kJ/mol

Consider the following statements about the reaction shown above. Which of the following is correct?

A) Heat is released by this reaction.
B) Heat is absorbed by this reaction.
C) The enthalpy of formation for Al2O3 is -3351 kJ/mol.
D) A & C are both correct.
E) B & C are both correct.

 
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