Chemistry: Structure and Properties
1st Edition
ISBN: 9780321834683
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter A2, Problem 5E
Interpretation Introduction
Interpretation: We have to explain which numbers are exact (and therefore have an unlimited numbers of significant)
a.
b.
c. EPA gas mileage rating of 26 miles per gallon
d. should be explained
Concept introduction:
► Exact numbers have definite values, or the values are obtained by counting of objects, whereas am measured number is obtained when a quantity is measured by a measuring device. Exact numbers have unlimited number of significant figures.
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Which numbers are exact (and therefore have an unlimited number of significant figures)?a. p = 3.14b. 12 in = 1 ftc. EPA gas mileage rating of 26 miles per gallond. 1 gross = 144
Which numbers are exact (and therefore have an unlimited numberof significant figures)?a. p = 3.14b. 12 inches = 1 footc. EPA gas mileage rating of 26 miles per gallond. 1 gross = 144
I. Significant Figures and Conversion
A. Scientific Notation
1. 58 cm → km
2. 67 W → MW
3. 196 mL L
4. 17 dm
– cm
5. 299 W → TW
Chapter A2 Solutions
Chemistry: Structure and Properties
Ch. A2 - For each number, underline the zeroes that are...Ch. A2 - Prob. 2ECh. A2 - Prob. 3ECh. A2 - How many significant figures are in each number?...Ch. A2 - Prob. 5ECh. A2 - Indicate the number of significant figures in each...Ch. A2 - Round each number to four significant figures. a....Ch. A2 - Round each number to three significant figures. a....Ch. A2 - Prob. 9ECh. A2 - Prob. 10E
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