Principles of General Chemistry
Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Chapter 1, Problem 1.13P
Interpretation Introduction

Interpretation:Part of conversion factor that comes in numerator and denominator in conversion of feet to inches should be determined.

Concept introduction:Conversion factor is ratio that is widely used to describe relation between two different units. In order to convert one unit into another, original unit is multiplied with proper conversion factor to yield new unit. This is done as mentioned below.

  Final unit=(Original unit)(Final unit Original unit)

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When you convert feet to inches, how do you decide which portion of the conversion factor should be in the numerator and which in the denominator?
56. Round the number on the left to the number of significant figures indicated by the example in the first row. (Use scientific notation as needed to avoid ambiguity.) Rounded to 4 Rounded to 2 Rounded to 1 Significant Figures Significant Figures Significant Figure Number 9 × 101 94.52118 94.52 95 105.4545 0.455981 0.009999991
Question 1: Determine whether the answer to each calculation has the correct number of significant figures. If not, correct it: 1A) 89.763 + 22.4581 = 3.997 1B) 4.32x1012 ÷ 3.1x104 = 1.4x1016 Question 2: Perform this calculation to the correct number of significant figures 9443 + 45 – 9.9 x 8.1x106 Question 3: Perform the following conversions: 3A) 78.3 cm to inches 3B) 22.5 lbs. to micrograms 3C) 396 in to L 4A) A new penny has a mass of 2.49g and a volume of 0.349cm³. Is the penny pure copper?

Chapter 1 Solutions

Principles of General Chemistry

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