Solid Sodium Peroxide (Na₂O₂)reacts with Liquid Water Yielding Aqueous Sodium

Solid sodium peroxide (Na₂O₂) reacts with liquid water yielding aqueous sodium hydroxide and oxygen gas.How much heat is released if 327.2 g of oxygen gas is produced from the reaction of sodium peroxide and water under standard-state conditions? Substance ΔH°_f(kJ/mol)
Na₂O₂ (s) -510.9
NaOH(aq) -469.6
H₂O(l) -285.8

A) 46,630 kJ
B) 1457 kJ
C) 6689 kJ
D) 3345 kJ
E) 2914 kJ