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1.55 Round off each number to the indicated number of signifi- cant figures (sf): (a) 231.554 (to 4 sf); (b) 0.00845 (to 2 sf); (c) 144,000 (to 2 sf).

1.55 Round off each number to the indicated number of signifi- cant figures (sf): (a) 231.554 (to 4 sf); (b) 0.00845 (to 2 sf); (c) 144,000 (to 2 sf).

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter2: Measurements And Calculations
Section: Chapter Questions
Problem 3QAP: When a large or small number is written in standard scientific notation, the number is expressed as...
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i, (0) 0.04+1; (C) 0.0410; (d) 4.0100×10*. 1.53 Underline the significant zeros in the following numbers: (a) 5.08; (b) 508; (c) 5.080×10°; (d) 0.05080. 1.54 Round off each number to the indicated number of signifi- cant figures (sf): (a) 0.0003554 (to 2 sf); (b) 35.8348 (to 4 sf); (c) 22.4555 (to 3 sf). 1.55 Round off each number to the indicated number of signifi- cant figures (sf): (a) 231.554 (to 4 sf); (b) 0.00845 (to 2 sf); (c) 144,000 (to 2 sf). 1.56 Round off each number in the following calculation to one fewer significant figure, and find the answer: 19 x 155 x 8.3 3.2 x 2.9 x 4.7 1.57 Round off each number in the following calculation to one fewer significant figure, and find the answer: 10.8 x 6.18 x 2.381 24.3 x 1.8 x 19.5 making sure that your
Transcribed Image Text:i, (0) 0.04+1; (C) 0.0410; (d) 4.0100×10*. 1.53 Underline the significant zeros in the following numbers: (a) 5.08; (b) 508; (c) 5.080×10°; (d) 0.05080. 1.54 Round off each number to the indicated number of signifi- cant figures (sf): (a) 0.0003554 (to 2 sf); (b) 35.8348 (to 4 sf); (c) 22.4555 (to 3 sf). 1.55 Round off each number to the indicated number of signifi- cant figures (sf): (a) 231.554 (to 4 sf); (b) 0.00845 (to 2 sf); (c) 144,000 (to 2 sf). 1.56 Round off each number in the following calculation to one fewer significant figure, and find the answer: 19 x 155 x 8.3 3.2 x 2.9 x 4.7 1.57 Round off each number in the following calculation to one fewer significant figure, and find the answer: 10.8 x 6.18 x 2.381 24.3 x 1.8 x 19.5 making sure that your
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