Concept explainers
The chapter sections to review are shown in parentheses at the end of each problem.
Round off or add zeros to the following calculated answers to give a final answer with three significant figures: (2.2)
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
Basic Chemistry
- (1.7)Write the answer to each of the following calculations with the correct number of significant figures. Do not write the answer in scientific notation. (124.6 121.03)/1.123 = 99.2 + 12.7=arrow_forward(1.6) Which of the following is an example of intensive properties? mass melting point O None of these volumearrow_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
- (1.7) 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_forwardThe 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_forwardThis 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_forward
- (1.8, Similar to For Practice 1.8) Convert 9.255 L to gallon by dimensional analysis. (Hint: 1.057 qt = 1 L, 1 gal = 4 qts) O 2.19 gal O 4.57 gal O 3.50 gal O 2.45 galarrow_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_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_forward
- 2.92 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(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_forwardPerform the calculation and record the answer with the correct number of significant figures. (6.5-6.08) %3D 3.95arrow_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