9. How much Ca(NO3)2 should be weighed out to have 0.650 mol? A)A) 66.4 g B) 97.6 g C) 107 g D) 133 g 10. In the balanced reaction shown, the mole ratio of Fe2S3 to SO2 is Fe2S3 +4 022 FeO +3 SO2 A) 1 to 3. B) 1 to 4. A) D) 11. In the reaction shown, what is the mole ratio that would be used to determine the number of moles of oxygen needed to react with 3.2 moles of C4H10? 14. 2 C4H10+ 13 02-8 CO + 10 HO 2 moles C4H10 13 moles 0 13. 13 moles 0 2 moles C4H10 A) 40.16% C) 3 to 1. E) B) 3.2 moles C4H10 13 moles 0 13 moles 0 3.2 moles C4H10 D) 1 to 2. B) 67.85% C) 84.30% 19.3 Which element listed is the most electronegative? A) sodium B) bromine 12. A solution containing 145.0 g AgNO3 is mixed with an excess CaCl2 solution to produce AgCI. 98.38 0of AgCl is recovered. The theoretical yield is 122.24 g. Calculate the % yield of the reaction. D) 80.48% 0.22-0.28 1.58C) chlorine The ammonia molecule contains- A) two nonpolar and one polar covalent bonds B) one nonpolar and two polar covalent bonds C) three nonpolar covalent bonds D) three polar covalent bonds E) Ttree ionic bonds C) E) 165 g E) 4 to 3. Dy Hour 2 moles C4H10 3.2 moles 02 E) 124.25% C) D) iodine E) Cesium Page