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The chapter sections to review are shown in parentheses at the end of each problem.
Identify each of the following numbers as measured or exact, and write the number of significant figures (SFs) in each of the measured numbers: (2.2, 2.3)
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Chapter 2 Solutions
EP BASIC CHEMISTRY-STANDALONE ACCESS
- (1.7) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g/mL, 1.72 g/mL, 1.71 g/mL, 1.70 g/mL. If the actual value for the density of the sugar solution is 1.50 g/mL, which statement below best describes her results? O Her results are accurate, but not precise. O Her results are precise, but not accurate. O Her results are both precise and accurate O Her results are neither precise nor accurate.arrow_forward1.48 Write each of the following in scientific notation: (1.5) a. 0.0042 b. 310 c. 890 000 000 d. 0.000 000 056 Iarrow_forward2.92 A graduated cylinder contains three liquids A, B, and C, which have different densities and do not mix: mercury (D = 13.6 g/mL), vegetable oil (D 0.92 g/mL), and water (D == 1.00 g/mL). Identify the liquids A, B, and C in the cylinder. (2.7) 50 40 30 -B 20 10 2.93 The gray cube has a density of 4.5 g/em2. Is the density of the green cube the same, lower than, or higher than that of the grayarrow_forward
- (4.3)(0.267) (7.40)(30.0) Above is written as a fraction Express your answer using the correct number of significant figures.arrow_forward(1.8)The area of a paper is 758 cm². What is the area of the paper in m²? O 7.58 x 104 m² O 7.58 x 102 m² O 0.0379 m² O 7.58 m²arrow_forwardHow many significant figures does the following calculations yield? (12.2-0.2)/1.02arrow_forward
- The answers 0.10 and 0.099 are both incorrect so please don't give me the same answer. Calculate what the answer is with the correct significant figures at the end? How is that and incomplete question? Perform the calculation and record the answer with the correct number of significant figures. (6.5 - 6.03) 4.73 0.099 Incorrectarrow_forwardComplete the following operations and write your answer with the correct number of significant figures. Use scientific notation when appropriate. (40.25)(23.4)(1.0001) =arrow_forwardThe correct answer (reported to the proper number of significant figures) to the following is ________. (12.67 + 19.2)(3.99) / (1.36 + 11.366) = ________arrow_forward
- This is a practice exercise. i will write down the answer that it says on the book for each problems. i need help on how they got that answer. how many significant figures should the answer in each of these calculations contain? just the significant figures only (A) (14.0) (5.2) Answer: 2. (E) 119.1-3.44. answer: 4 (B) (0.1682) (8.2). Answer: 2 (h) 1.6 + 23 - 0.005. Answer: 2 (C) (160)(33)/4. Answer: 1 (D) 8.2+0.125 Answer: 2arrow_forwardEvaluate the following and express your answer in standard scientific notation. (3.5-10 2) (7.1210 4) (9.6z10) O 5.1x10-2 O 5.1x10-3 O 4.71x10-4 O 4.7x100arrow_forward(1.4)Which of the following is a chemical change? O cutting papers O rusting iron O breaking glasses dissolving sugar in waterarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
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