Basic Chemistry (5th Edition)
Basic Chemistry (5th Edition)
5th Edition
ISBN: 9780134138046
Author: Karen C. Timberlake
Publisher: PEARSON
Question
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Chapter 2, Problem 2.105AQAP
Interpretation Introduction

(a)

Interpretation:

The value 0.00001258 L needs to be round off up to three significant figures.

Concept Introduction:

The following rules needs to be followed to determine the correct number of significant figures in a given number:

  1. All non-zero digits are significant.
  2. Trailing zeros after decimal are significant.
  3. All zeros in between two non-zero or significant figures are significant.

Rules for rounding off numbers are as follows:

  1. If the digit to be rounded off is followed by digit greater than 5, the number will be rounded up.
  2. For example: Rounding off number 38, the first digit is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.

  3. If the digit to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
  4. For example: Rounding off number 33, the first digit is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.

  5. If the digit to be rounded off is followed by digit 5 and it is even, then it will remain the same, but if the digit is odd, it will be rounded up to get an even number.

Interpretation Introduction

(b)

Interpretation:

The value 3.528×102kg    needs to be round off up to three significant figures.

Concept Introduction:

The following rules needs to be followed to determine the number of significant figures:

  1. All non-zero digits are significant.
  2. Trailing zeros after decimal are significant.
  3. All zeros in between two non-zero or significant figures are significant.

Rules for rounding off numbers are as follows:

  1. If the digit to be rounded off is followed by digit greater than 5, the number will be rounded up.
  2. For example: Rounding off number 38, the first digit is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.

  3. If the digit to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
  4. For example: Rounding off number 33, the first digit is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.

  5. If the digit to be rounded off is followed by digit 5 and it is even, then it will remain the same, but if the digit is odd, it will be rounded up to get an even number.

Interpretation Introduction

(c)

Interpretation:

The value 125111 m needs to be round off up to three significant figures.

Concept Introduction:

The following rules needs to be followed to determine the number of significant figures:

  1. All non-zero digits are significant.
  2. Trailing zeros after decimal are significant.
  3. All zeros in between two non-zero or significant figures are significant.

Rules for rounding off numbers are as follows:

  1. If the digit to be rounded off is followed by digit greater than 5, the number will be rounded up.
  2. For example: Rounding off number 38, the first digit is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.

  3. If the digit to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
  4. For example: Rounding off number 33, the first digit is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.

  5. If the digit to be rounded off is followed by digit 5 and it is even, then it will remain the same, but if the digit is odd, it will be rounded up to get an even number.

Interpretation Introduction

(d)

Interpretation:

The value 34.9673 s needs to be round off up to three significant figures.

Concept Introduction:

The following rules needs to be followed to determine the number of significant figures:

  1. All non-zero digits are significant.
  2. Trailing zeros after decimal are significant.
  3. All zeros in between two non-zero or significant figures are significant.

Rules for rounding off numbers are as follows:

  1. If the digit to be rounded off is followed by digit greater than 5, the number will be rounded up.
  2. For example: Rounding off number 38, the first digit is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.

  3. If the digit to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
  4. For example: Rounding off number 33, the first digit is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.

  5. If the digit to be rounded off is followed by digit 5 and it is even, then it will remain the same, but if the digit is odd, it will be rounded up to get an even number.

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Chapter 2 Solutions

Basic Chemistry (5th Edition)

Ch. 2.2 - Identify the numbers in each of the following...Ch. 2.2 - Identify the numbers in each of the following...Ch. 2.2 - Identify the measured number(s), ifany, in each of...Ch. 2.2 - Identify the exact number(s), if any, in each of...Ch. 2.2 - Prob. 2.15QAPCh. 2.2 - Prob. 2.16QAPCh. 2.2 - Prob. 2.17QAPCh. 2.2 - Prob. 2.18QAPCh. 2.2 - Prob. 2.19QAPCh. 2.2 - Prob. 2.20QAPCh. 2.2 - Prob. 2.21QAPCh. 2.2 - 2.22 Write each of the following in scientific...Ch. 2.2 - Prob. 2.23QAPCh. 2.2 - Prob. 2.24QAPCh. 2.3 - Prob. 2.25QAPCh. 2.3 - Prob. 2.26QAPCh. 2.3 - Round off each of the following measurements to...Ch. 2.3 - Round off each of the following measurements to...Ch. 2.3 - Prob. 2.29QAPCh. 2.3 - Prob. 2.30QAPCh. 2.3 - Prob. 2.31QAPCh. 2.3 - Perform each of the following calculations, and...Ch. 2.3 - Prob. 2.33QAPCh. 2.3 - Perform each of the following calculations, and...Ch. 2.4 - Prob. 2.35QAPCh. 2.4 - In a French car, the odometer reads 22269. What...Ch. 2.4 - Prob. 2.37QAPCh. 2.4 - Prob. 2.38QAPCh. 2.4 - Prob. 2.39QAPCh. 2.4 - Prob. 2.40QAPCh. 2.4 - Prob. 2.41QAPCh. 2.4 - Prob. 2.42QAPCh. 2.4 - Prob. 2.43QAPCh. 2.4 - Prob. 2.44QAPCh. 2.4 - Prob. 2.45QAPCh. 2.4 - Prob. 2.46QAPCh. 2.4 - For each of the following pairs, which is the...Ch. 2.4 - Prob. 2.48QAPCh. 2.5 - Why can two conversion factors be written for an...Ch. 2.5 - Prob. 2.50QAPCh. 2.5 - Prob. 2.51QAPCh. 2.5 - Write the equality and two conversion factors for...Ch. 2.5 - Prob. 2.53QAPCh. 2.5 - Prob. 2.54QAPCh. 2.5 - Prob. 2.55QAPCh. 2.5 - Write the equality and two conversion factors, and...Ch. 2.5 - Write the equality and conversion factors, and...Ch. 2.5 - Prob. 2.58QAPCh. 2.5 - Prob. 2.59QAPCh. 2.5 - Prob. 2.60QAPCh. 2.6 - When you convert one unit to another, how do you...Ch. 2.6 - Prob. 2.62QAPCh. 2.6 - Prob. 2.63QAPCh. 2.6 - 2.64 Perform each of the following conversions...Ch. 2.6 - Prob. 2.65QAPCh. 2.6 - Prob. 2.66QAPCh. 2.6 - Prob. 2.67QAPCh. 2.6 - Use metric conversion factors to solve each of the...Ch. 2.6 - Prob. 2.69QAPCh. 2.6 - Prob. 2.70QAPCh. 2.6 - Prob. 2.71QAPCh. 2.6 - Using conversion factors, solve each of me...Ch. 2.6 - Prob. 2.73QAPCh. 2.6 - Using conversion factors, solve each of the...Ch. 2.6 - Prob. 2.75QAPCh. 2.6 - Prob. 2.76QAPCh. 2.7 - Prob. 2.77QAPCh. 2.7 - Determine the density (g/mL) for each of the...Ch. 2.7 - Prob. 2.79QAPCh. 2.7 - Prob. 2.80QAPCh. 2.7 - Prob. 2.81QAPCh. 2.7 - Prob. 2.82QAPCh. 2.7 - Prob. 2.83QAPCh. 2.7 - Prob. 2.84QAPCh. 2.7 - Prob. 2.85QAPCh. 2.7 - Prob. 2.86QAPCh. 2.7 - Prob. 2.87QAPCh. 2.7 - Solve each of the following problems: A glucose...Ch. 2 - Prob. 2.89FUCh. 2 - Prob. 2.90FUCh. 2 - Prob. 2.91UTCCh. 2 - Prob. 2.92UTCCh. 2 - Prob. 2.93UTCCh. 2 - Prob. 2.94UTCCh. 2 - Prob. 2.95UTCCh. 2 - Prob. 2.96UTCCh. 2 - Prob. 2.97UTCCh. 2 - Prob. 2.98UTCCh. 2 - Prob. 2.99UTCCh. 2 - Prob. 2.100UTCCh. 2 - Consider the following solids. The solids A, B,...Ch. 2 - Prob. 2.102UTCCh. 2 - Prob. 2.103UTCCh. 2 - Prob. 2.104UTCCh. 2 - Prob. 2.105AQAPCh. 2 - Prob. 2.106AQAPCh. 2 - A dessert contains 137 25 g of vanilla ice cream....Ch. 2 - Prob. 2.108AQAPCh. 2 - Prob. 2.109AQAPCh. 2 - Prob. 2.110AQAPCh. 2 - Prob. 2.111AQAPCh. 2 - Prob. 2.112AQAPCh. 2 - Prob. 2.113AQAPCh. 2 - Prob. 2.114AQAPCh. 2 - Prob. 2.115AQAPCh. 2 - A graduated cylinder contains 155 mL of water. A...Ch. 2 - Prob. 2.117AQAPCh. 2 - Prob. 2.118AQAPCh. 2 - Prob. 2.119AQAPCh. 2 - Prob. 2.120AQAPCh. 2 - Prob. 2.121AQAPCh. 2 - Prob. 2.122AQAPCh. 2 - Prob. 2.123AQAPCh. 2 - Prob. 2.124AQAPCh. 2 - Prob. 2.125CQCh. 2 - Prob. 2.126CQCh. 2 - Prob. 2.127CQCh. 2 - Prob. 2.128CQCh. 2 - Prob. 2.129CQCh. 2 - Prob. 2.130CQCh. 2 - Prob. 2.131CQCh. 2 - Prob. 2.132CQCh. 2 - Prob. 2.133CQCh. 2 - Prob. 2.134CQCh. 2 - Prob. 2.135CQCh. 2 - Prob. 2.136CQ
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