Exam 2: Chemistry and Measurement
Exam 1: Chemistry in Our Lives52 Questions
Exam 2: Chemistry and Measurement85 Questions
Exam 3: Matter and Energy110 Questions
Exam 4: Atoms and Elements106 Questions
Exam 5: Nuclear Chemistry90 Questions
Exam 6: Ionic and Molecular Compounds106 Questions
Exam 7: Chemical Quantities and Reactions114 Questions
Exam 8: Gases76 Questions
Exam 9: Solutions73 Questions
Exam 10: Acids and Bases and Equilibrium67 Questions
Exam 11: Introduction to Organic Chemistry: Hydrocarbons123 Questions
Exam 12: Alcohols, thiols, ethers, aldehydes, and Ketones78 Questions
Exam 13: Carbohydrates81 Questions
Exam 14: Carboxylic Acids, esters, amines, and Amides103 Questions
Exam 15: Lipids65 Questions
Exam 16: Amino Acids, proteins, and Enzymes90 Questions
Exam 17: Nucleic Acids and Protein Synthesis64 Questions
Exam 18: Metabolic Pathways and Energy Production131 Questions
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State the number of significant figures in each of the following measurements.
-0.705 m
(Short Answer)
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A 50.0 mL urine sample has a mass of 50.7 g.The specific gravity of the urine is ________.
(Multiple Choice)
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What is the mass of 53 mL of ethanol,which has a density of 0.79 g/mL?
(Multiple Choice)
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Diamond has a density of 3.52 g/mL.What is the volume in cubic centimeters of a diamond with a mass of 15.1 g?
(Multiple Choice)
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Round off each of the following to three significant figures.
-8.3158
(Short Answer)
4.7/5
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An object with a mass of 56 g and volume of 22 mL has a density of 2.5 g/mL.
(True/False)
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Which of the following measurements has three significant figures?
(Multiple Choice)
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Which of the following conversion factors is a measured number?
(Multiple Choice)
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Which of the following examples illustrates a number that is correctly rounded to three significant figures?
(Multiple Choice)
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A liquid has a volume of 34.6 mL and a mass of 46.0 g.What is the density of the liquid?
(Multiple Choice)
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Round off each of the following to three significant figures.
-504.85
(Short Answer)
4.8/5
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Round off each of the following to three significant figures.
-0.003 408 8
(Short Answer)
4.9/5
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Which one of the following substances will float in gasoline,which has a density of 0.74 g/mL? The density of each substance is shown in parentheses.
(Multiple Choice)
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The measurement of the gravitational pull on an object is its ________.
(Multiple Choice)
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