Chemistry for Engineering Students
3rd Edition
ISBN: 9781285199023
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 1.45PAE
1.41 How many significant figures are present in these measured quantities? (a) 1374 kg, (b) 0.00348 s, (c) 5.619 nm, (d)
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Express the following numbers as decimals:(a) 1.52 × 10−2
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(d) 1.6001 × 103.
Calculate these masses.(a) What is the mass of 6.00 cm 3 of sodium, density = 0.97 g/cm 3 ?(b) What is the mass of 155 mL gaseous chlorine, density = 3.16 g/L?
Perform the following arithmetic operations, and report the result to the proper number of significant figures:(a) 105.5 L + 10.65 L, (b) 81.058 m − 0.35 m, (c) 3.801 × 1021 atoms + 1.228 × 1019 atoms, (d) 1.255 dm × 25 dm, (e) 139 g ÷ 275.55 mL.
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Measurement and Significant Figures; Author: Professor Dave Explains;https://www.youtube.com/watch?v=Gn97hpEkTiM;License: Standard YouTube License, CC-BY
Trigonometry: Radians & Degrees (Section 3.2); Author: Math TV with Professor V;https://www.youtube.com/watch?v=U5a9e1J_V1Y;License: Standard YouTube License, CC-BY