World of Chemistry, 3rd edition
World of Chemistry, 3rd edition
3rd Edition
ISBN: 9781133109655
Author: Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher: Brooks / Cole / Cengage Learning
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Chapter 5, Problem 34A

(a)

Interpretation Introduction

Interpretation: The answer to the correct number of significant digits to be calculated.

Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.

(a)

Expert Solution
Check Mark

Answer to Problem 34A

The answer will be 2.04

Explanation of Solution

In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.

The given digits are (2.0944+0.0003233+12.22)/(7.001)

Calculations of these digits are as follows:

  2.0944+0.0003233+12.227.001=14.31472337.001=2.04466838

12.22 has limited to two decimal places. Thus after rounding off the answer will be 2.04

(b)

Interpretation Introduction

Interpretation: The answer to the correct number of significant digits to be calculated.

Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.

(b)

Expert Solution
Check Mark

Answer to Problem 34A

The answer will be 0.7×103

Explanation of Solution

In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.

The given digits are [(1.42×102)+(1.021×103)]/3.1×101

Calculations of these digits are as follows:

  [(1.42×102)+(1.021×103)]3.1×101=2.441×1033.1=0.787419355×103

3.1 is limited to one decimal place. Thus after rounding off the answer will be 0.7×103 .

(c)

Interpretation Introduction

Interpretation: The answer to the correct number of significant digits to be calculated.

Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.

(c)

Expert Solution
Check Mark

Answer to Problem 34A

The answer will be 5.19×106

Explanation of Solution

In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.

The given digits are (9.762×103)/[(1.43×102)+(4.51×101)]

Calculations of these digits are as follows:

  (9.762×103)[(1.43×102)+(4.51×101)]=(9.762×103)1.881×102=5.18979266×106

1.43 and 4.51 are limited to two decimal place. Thus after rounding off the answer will be 5.19×106 .

(d)

Interpretation Introduction

Interpretation: The answer to the correct number of significant digits to be calculated.

Concept introduction: Scientific notation is quantitative information is called a measurement and exists of a number and a unit. By using scientific notation too large or too small numbers are conveniently expressed.

(d)

Expert Solution
Check Mark

Answer to Problem 34A

The answer will be 38.41×108

Explanation of Solution

In final result number of significant figures is the same as that in the measurement with smallest number of significant figures.

The given digits are (6.1982×104)2

Calculations of these digits are as follows:

  (6.1982×104)2=38.4176832×108

6.1982has limited to four decimal places. Thus after rounding off the answer will be 38.41×108

Chapter 5 Solutions

World of Chemistry, 3rd edition

Ch. 5.2 - Prob. 6RQCh. 5.2 - Prob. 7RQCh. 5.3 - Prob. 1RQCh. 5.3 - Prob. 2RQCh. 5.3 - Prob. 3RQCh. 5.3 - Prob. 4RQCh. 5.3 - Prob. 5RQCh. 5.3 - Prob. 6RQCh. 5.3 - Prob. 7RQCh. 5 - Prob. 1ACh. 5 - Prob. 2ACh. 5 - Prob. 3ACh. 5 - Prob. 4ACh. 5 - Prob. 5ACh. 5 - Prob. 6ACh. 5 - Prob. 7ACh. 5 - Prob. 8ACh. 5 - Prob. 9ACh. 5 - Prob. 10ACh. 5 - Prob. 11ACh. 5 - Prob. 12ACh. 5 - Prob. 13ACh. 5 - Prob. 14ACh. 5 - Prob. 15ACh. 5 - Prob. 16ACh. 5 - Prob. 17ACh. 5 - Prob. 18ACh. 5 - Prob. 19ACh. 5 - Prob. 20ACh. 5 - Prob. 21ACh. 5 - Prob. 22ACh. 5 - Prob. 23ACh. 5 - Prob. 24ACh. 5 - Prob. 25ACh. 5 - Prob. 26ACh. 5 - Prob. 27ACh. 5 - Prob. 28ACh. 5 - Prob. 29ACh. 5 - Prob. 30ACh. 5 - Prob. 31ACh. 5 - Prob. 32ACh. 5 - Prob. 33ACh. 5 - Prob. 34ACh. 5 - Prob. 35ACh. 5 - Prob. 36ACh. 5 - Prob. 37ACh. 5 - Prob. 38ACh. 5 - Prob. 39ACh. 5 - Prob. 40ACh. 5 - Prob. 41ACh. 5 - Prob. 42ACh. 5 - Prob. 43ACh. 5 - Prob. 44ACh. 5 - Prob. 45ACh. 5 - Prob. 46ACh. 5 - Prob. 47ACh. 5 - Prob. 48ACh. 5 - Prob. 49ACh. 5 - Prob. 50ACh. 5 - Prob. 51ACh. 5 - Prob. 52ACh. 5 - Prob. 53ACh. 5 - Prob. 54ACh. 5 - Prob. 55ACh. 5 - Prob. 56ACh. 5 - Prob. 57ACh. 5 - Prob. 58ACh. 5 - Prob. 59ACh. 5 - Prob. 60ACh. 5 - Prob. 61ACh. 5 - Prob. 62ACh. 5 - Prob. 63ACh. 5 - Prob. 64ACh. 5 - Prob. 65ACh. 5 - Prob. 66ACh. 5 - Prob. 67ACh. 5 - Prob. 68ACh. 5 - Prob. 69ACh. 5 - Prob. 70ACh. 5 - Prob. 71ACh. 5 - Prob. 72ACh. 5 - Prob. 73ACh. 5 - Prob. 74ACh. 5 - Prob. 75ACh. 5 - Prob. 76ACh. 5 - Prob. 77ACh. 5 - Prob. 1STPCh. 5 - Prob. 2STPCh. 5 - Prob. 3STPCh. 5 - Prob. 4STPCh. 5 - Prob. 5STPCh. 5 - Prob. 6STPCh. 5 - Prob. 7STPCh. 5 - Prob. 8STPCh. 5 - Prob. 9STP
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