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Unformatted text preview: Chemistry II Final Exam Review 9. Express 0.00560 in exponential notation. A) 5.60 10 3 B) 5.6 10-3 C) 5.60 10-3 D) 5.60 E) none of these 10. A titration was performed to find the concentration of hydrochloric acid with the following results: Trial Molarity 1 1.25 0.01 2 1.24 0.01 3 1.26 0.01 A) both accurate and precise. B) accurate but imprecise. C) precise but inaccurate. D) both inaccurate and imprecise. E) accuracy and precision are impossible to determine with the available information. 12. We generally report a measurement by recording all of the certain digits plus ____ uncertain digit(s). A) no B) one C) two D) three E) four 13. The amount of uncertainty in a measured quantity is determined by: A) both the skill of the observer and the limitations of the measuring instrument. B) neither the skill of the observer nor the limitations of the measuring instrument. C) the limitations of the measuring instrument only. D) the skill of the observer only. E) none of these 15. How many significant figures are there in the number 3.1400? A) 1 B) 2 C) 3 D) 4 E) 5 17. Express 165,000 in exponential notation. A) 1.65000 10 5 B) 1.65 10 5 C) 1.6500 10 5 D) 1.65 10 5 E) 165 10 3 21. Using the rules of significant figures, calculate the following: 4.0021-1.346 A) 2.656 B) 3 C) 2.6561 D) 2.66 E) 2.7 22. How many significant figures are there in the number 0.04560700? A) 4 B) 5 C) 7 D) 8 E) 9 32. Convert 4483 mL to qts. (1 L = 1.06 qt) A) 4752 qts B) 4.229 qts C) 4.229e3 qts D) 4229 qts E) 4.752 qts 33. Convert 77.5 lb to g. (1 lb = 453.6 g) A) 3.52e3 g B) 1.71e5 g C) 3.52e2 g D) 1.71e1 g E) 3.52e4 g 39. The state of matter for an object that has a definite volume but not a definite shape is A) solid state. B) liquid state. C) gaseous state. D) elemental state. E) mixed state. 49. The density of gasoline is 0.7025 g/mL at 20C. When gasoline is added to water: A) it will float on top. B) it will sink to the bottom. C) it will mix so you can't see it. D) the mixture will improve the running of the motor. E) none of these things will happen. 55. _________ are substances with constant composition that can be broken down into elements by chemical processes. A) Solutions B) Mixtures C) Compounds D) Quarks E) Heterogeneous mixtures 56. A method of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called A) filtration. B) chromatography. C) distillation. D) vaporization. E) homogenization. 57. A solution is also called a- 1 - A) homogeneous mixture. B) heterogeneous mixture. C) pure mixture. D) compound. E) distilled mixture. 65. The beakers shown below have different precisions as shown....
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- Spring '11