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2.49 Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following: a. A bee flies at an average speed of 3.5 m per second. b. The Daily Value (DV) for potassium is 3.5 g. c. An automobile traveled 26.0 km on 1 L of gasoline. d. The pesticide level in plums was 29 ppb. e. Silicon makes up 28.2% by mass of Earth's crust.

2.49 Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following: a. A bee flies at an average speed of 3.5 m per second. b. The Daily Value (DV) for potassium is 3.5 g. c. An automobile traveled 26.0 km on 1 L of gasoline. d. The pesticide level in plums was 29 ppb. e. Silicon makes up 28.2% by mass of Earth's crust.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2.49 Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following: a. A bee flies at an average speed of 3.5 m per second. b. The Daily Value (DV) for potassium is 3.5 g. c. An automobile traveled 26.0 km on 1 L of gasoline. d. The pesticide level in plums was 29 ppb. e. Silicon makes up 28.2% by mass of Earth's crust.
Transcribed Image Text:2.49 Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following: a. A bee flies at an average speed of 3.5 m per second. b. The Daily Value (DV) for potassium is 3.5 g. c. An automobile traveled 26.0 km on 1 L of gasoline. d. The pesticide level in plums was 29 ppb. e. Silicon makes up 28.2% by mass of Earth's crust.
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