5. What is the coefficient for water when the following equation is balanced ? Fe2O3 + HNO3 → Fe(NO3)3 + H2O (A) 1 (B) 2 (C) 3 (D) 4

9. Which of the following statement is correct when 0.1 M of AgNO3(aq) and 0.1M of KI(aq) are mixed? (A) KNO3 will precipitate; Ag+ and I- will be spectator ions. (B) No precipitate will form (C) AgI will precipitate; K+ and I- will be spectator ions. (D) AgI will precipitate; K+ and NO3- will be spectator ions.