7. Finish and balance the neutralization reaction: HClO4 (aq) + Ba(OH)2 (aq) →(A) H2O (l) + BaCl2 (aq)(B) H2O (l) + Ba(ClO4)2 (s)(C) H2O (l) + Ba(ClO4)2 (aq)(D) BaO (s) + Cl2 (g) + H2O (l)
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