Chemistry 11

1. Final Exam Review  Clicker Edition! 

2. 1. You can identify a metal by carefully determining its density. A 33.39 g sample of an unknown metal is 1.50 cm long, 2.50 cm wide, and 1.00 cm thick. What is a possible identity of the element? nickel, 8.0 g/cm3 aluminum, 2.70 g/cm3 silver, 10.5 g/cm3 Question #1

3. 1. You can identify a metal by carefully determining its density. A 33.39 g sample of an unknown metal is 1.50 cm long, 2.50 cm wide, and 1.00 cm thick. What is a possible identity of the element? nickel, 8.0 g/cm3 aluminum, 2.70 g/cm3 silver, 10.5 g/cm3 Question #1

4. Which of the following observations is/are examples of physical change? A. hydrogen gas is evolved when zinc reacts with hydrochloric acid B. Aluminum melts when heated above 660°C C. The density of water decreases when it solidifies. Question #2

5. Which of the following observations is/are examples of physical change? A. hydrogen gas is evolved when zinc reacts with hydrochloric acid B. Aluminum melts when heated above 660°C C. The density of water decreases when it solidifies. Question #2

6. Ethanol boils at 351.7 K. What is this temperature in Celsius? Question #3

7. Ethanol boils at 351.7 K. What is this temperature in Celsius? 78.7 oC Question #3

8. An electronic balance is used to determine that a sample has a mass of 5.8234 g. How many significant figures does this measurement have? Question #4

9. An electronic balance is used to determine that a sample has a mass of 5.8234 g. How many significant figures does this measurement have? 5 Question #4

10. What is the correct answer to the following expression: (86.11 – 85.49) / 28.26 2 × 10-2 2.2 × 10-2 2.19 × 10-2 2.194 × 10-2 2.1939 × 10-2 Question #5

11. What is the correct answer to the following expression: (86.11 – 85.49) / 28.26 2 × 10-2 2.2 × 10-2 2.19 × 10-2 2.194 × 10-2 2.1939 × 10-2 Question #5

12. Question #6

13. Question #6

14. A sulfide ion has ____ electrons. Question #7

15. A sulfide ion has ____ electrons. 18 Question #7

16. What is the charge on the copper ion in Cu3N? Question #8

17. What is the charge on the copper ion in Cu3N? 3 Question #8

18. What is the correct formula for iron(III) bromide? FeBr FeBr3 Fe2Br3 Fe3Br2 Fe3Br Question #9

19. What is the correct formula for iron(III) bromide? FeBr FeBr3 Fe2Br3 Fe3Br2 Fe3Br Question #9

20. Calculate the number of moles in 0.093 g Zn. Question #10

21. Calculate the number of moles in 0.093 g Zn. 0.0014 mol Question #10

22. How many hydrogen atoms are in 1.0 g of CH4? 6.2 × 10-2 atoms 2.5 × 10-1 atoms 3.8 × 1022 atoms 1.5 × 1023 atoms 3.9 × 1025 atoms Question #11

23. How many hydrogen atoms are in 1.0 g of CH4? 6.2 × 10-2 atoms 2.5 × 10-1 atoms 3.8 × 1022 atoms 1.5 × 1023 atoms 3.9 × 1025 atoms Question #11

24. Identify reaction type: Cu + AgNO3 Cu(NO3)2 + Ag Combustion Single replacement Double replacement Synthesis Decomposition Question #12

25. Identify reaction type: Cu + AgNO3 Cu(NO3)2 + Ag Combustion Single replacement Double replacement Synthesis Decomposition Question #12

26. Identify reaction type: 2 C8H18 + 25 O2 16 CO2 + 18 H2O Combustion Single replacement Double replacement Synthesis Decomposition Question #13

27. Identify reaction type: 2 C8H18 + 25 O2 16 CO2 + 18 H2O Combustion Single replacement Double replacement Synthesis Decomposition Question #13

28. Identify reaction type: 4Ag + O2 2Ag2O Combustion Single replacement Double replacement Synthesis Decomposition Question #14

29. Identify reaction type: 4Ag + O2 2Ag2O Combustion Single replacement Double replacement Synthesis Decomposition Question #14

30. Write a balanced equation for the double displacement reaction between aluminum nitrate and potassium phosphate. What is the sum of the coefficients? Question #15

31. Write a balanced equation for the double displacement reaction between aluminum nitrate and potassium phosphate. What is the sum of the coefficients? 6 Question #15

32. Aluminum reacts with oxygen to produce aluminum oxide. 4 Al(s) + 3 O2(g)  2Al2O3(s) If 4.0 moles of Al react with excess O2, how many moles of product can be formed? Question #16

33. Aluminum reacts with oxygen to produce aluminum oxide. 4 Al(s) + 3 O2(g)  2Al2O3(s) If 4.0 moles of Al react with excess O2, how many moles of product can be formed? 2.0 mol Question #16

34. What mass of water is produced by the complete combustion of 6.21 g of hexane, C6H14 (can assume O2 in xs)? 0.186 g 1.60 g 9.09 g 43.5 g 208 g Question #17

35. What mass of water is produced by the complete combustion of 6.21 g of hexane, C6H14 (can assume O2 in xs)? 0.186 g 1.60 g 9.09 g 43.5 g 208 g Question #17

36. How many moles of Cu2O can be produced from the reaction of 0.66 mol Cu with 0.40 mol O2? Question #18

37. How many moles of Cu2O can be produced from the reaction of 0.66 mol Cu with 0.40 mol O2? 0.33 mol Question #18

38. At constant temperature, 12.5 L of a gas at 262 mm Hg is compressed to 4.15 L. What is the final pressure of the gas? Question #19

39. At constant temperature, 12.5 L of a gas at 262 mm Hg is compressed to 4.15 L. What is the final pressure of the gas? 789 mm Hg Question #19

40. A 48.0 L gas cylinder contains 498 g H2 at 25°C. What is the pressure (in atm) inside the cylinder? (R = 0.0821 L*atm/mol*K) Question #20

41. A 48.0 L gas cylinder contains 498 g H2 at 25°C. What is the pressure (in atm) inside the cylinder? (R = 0.0821 L*atm/mol*K) 125 atm Question #20

42. The correct name for LiCl is lithium monochloride lithium(I) chloride monolithium chloride lithium chloride monolithium monochloride Question #21

43. The correct name for LiCl is lithium monochloride lithium(I) chloride monolithium chloride lithium chloride monolithium monochloride Question #21

44. The correct name for FeO is iron oxide iron(II) oxide iron(III) oxide iron monoxide iron(I) oxide Question #22

45. The correct name for FeO is iron oxide iron(II) oxide iron(III) oxide iron monoxide iron(I) oxide Question #22

46. What is the subscript of barium in the formula barium sulfate? Question #23

47. What is the subscript of barium in the formula barium sulfate? 1 Question #23

48. What is the molar mass of cryolite (Na3AlF6)? 209.9 g/mol 185.3 g/mol 210.0 g/mol 104.2 g/mol 68.97 g/mol Question #24

49. What is the molar mass of cryolite (Na3AlF6)? 209.9 g/mol 185.3 g/mol 210.0 g/mol 104.2 g/mol 68.97 g/mol Question #24

50. Which of the following would represent the greatest pressure? 0.713 atm 345 mm Hg 12.0 psi 58486 Pa Question #25

51. Which of the following would represent the greatest pressure? 0.713 atm 345 mm Hg 12.0 psi 58486 Pa Question #25