MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the coefficient of H2504 when the following equation is properly balanced with the smallest set of whole numbers? A) 3 13) 11 C) 8 D) 10 E) None of these answers is correct. 2) Ammonia reacts with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in the production of aluminum, in uranium processing, and in the frosting of light bulbs). 2NH3(g) + 5F2(g) â N2F4(g) + 6HF(x) How many moles of NH3 are needed to react completely with 13.6 mol of F2? A) 34.0 mol E) 27.2 mol B) 2.27 mol C) 5.44 mol D) 6.80 mol 3) The distinguishing characteristic of allelectrolyte solutions is that they A) always contain acids. B) conduct electricity. C) conduct heat. D) contain molecules. E) react with other solutions. 4) What is oxidized in the following reaction? Fe Ag20 Feo+2Ag A) Fe B) Ag C)2Ag D) Ag20 E) FeO 5) What is the oxidation number of Cr in Cro0,2? A) +6 B)-2 D)-7 E)-12 6) A 50.0 mL. sample of 0.436 MNH,NO, is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution? A) 0.349 M B) 2.18 M C) 0.0872 M D 0.174 M E) 0.523 M 7) A 3.682-g sample of KCIO3 is dissolved in enough water to give 375. mL of solution. What is the KCIO, concentration in this solution? A) 9.82 M B)1.60 Ã 10-2 M c) 1.60 Ã 10-1 M D) 9.82 Ã 10-3 M