(A) CH (D) H-O 17. Which of the following bonds would be the most polar? (0) 0-5 20. Which of the following species has an sp'd hybridization? A 810, B. HO C. CF. D. PCI E. SO," (8) H-H N-N 18. Which of the following has a lone pair on the central atom but is nonpolar? a. HB b. NH GNO d. XeF 160 19. Which of the following would most likely be soluble in water? 2. CH B NHi Ne d. SH. 21. What is the sum of the coefficients of the following equation when it is balanced using smallest whole numbers? NO(g) 0 + HO HNO A) S 8) 7 99 DJ 10 E) 11 22. If 10 moles of propane reacted with 20 moles of water, how many moles of carbon dioxide and water will form combined? 2CH a. 54 b. 56 23. Given the following equation: c. 30 a. 3.6 b. 7.2 c. 1.8 d. 2.0 50 d. 24 6CO + 8H0 e. 36 2 Mg(s) + Ox(g)2 MgO(s) If 3.6 moles of magnesium oxide form how many moles of oxygen reacted? 24. How many grams of MgO could be obtained from 24.3 grams of Mg and 32.0 grams of O? (atomic weights: Mg = 24.3; O=16.0) (a) 24.3 g (b) 32.0 g (c) 40.3 g (d) 56.3 g (e) 80.6 g