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Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed.            A) K+(aq) + NO3-(aq) → KNO3(s)            B) Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3-(aq) → FeS(s) + 2 K+(aq) + 2 NO3-(aq)            C) Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3-(aq) → Fe2+(aq) + S2-(aq) + 2 KNO3(s)            D) Fe2+(aq) + S2-(aq) → FeS(s)            E) No reaction occurs.

The last stage involved in arresting bleeding after vessel damage is the formation of a __________.

Determine the theoretical yield of HCl if 60.0 g of BCl3 and 37.5 g of H2O are reacted according to the following balanced reaction. A possibly useful molar mass is BCl3 = 117.16 g/mol.                                           BCl3(g) + 3 H2O(l) → H3BO3(s) + 3 HCl(g)        A) 75.9 g HCl        B) 132 g HCl        C) 187 g HCl        D) 56.0 g HCl        E) 25.3 g HCl

Choose the compound below that should have the highest melting point according to the ionic bonding model. A) AlN B) MgO C) Li F D) CaS E) Rb F

Calculate the wavelength of light associated with the transition from n=1 to n=3 in the hydrogen atom. A) 103 nm B) 155 nm C) 646 nm D) 971 nm E) 136 nm

Which of the following statements is TRUE? A) An ionic bond is much stronger than most covalent bonds. B) An ionic bond is formed through the sharing of electrons. C) Ionic compounds at room temperature typically conduct electricity. D) Once dissolved in water, ionic compounds rarely conduct electricity. E) None of the above are true.

Identify the color of a flame test for sodium. A) violet B) red C) white D) yellow E) blue

Which of the following visible colors of light has the highest frequency? A) green B) red C) blue D) yellow E) orange

Which one of the following elements is a poor conductor of heat and electricity? A) copper B) iodine C) iron D) lead

When an aqueous solution of manganese (II) nitrate is combined with an aqueous solution of ammonium sulfide, what should precipitate out? A) MnS B) Mn(SO3)2 C) Mn(SO4)2 D) Mn2SO3 E) Mn2SO4