Textbook Question
What is the number of significant figures in each of the following measured quantities? e. 3.50×103 cm3
Ch.1 - Introduction: Matter, Energy, and Measurement
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Not the one you use?Change textbook
Chapter 1, Problem 46e
Indicate the number of significant figures in each of the following measured quantities: e. 12.8690 g
Verified step by step guidance1
Identify the digits in the number 12.8690 g.
Recognize that all non-zero digits are significant.
Note that any zeros between non-zero digits are also significant.
Observe that trailing zeros in a decimal number are significant.
Count all the significant digits in 12.8690 g to determine the number of significant figures.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
55sWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Significant Figures
Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. Understanding significant figures is crucial for accurately reporting measurements and ensuring that calculations reflect the precision of the data.
Recommended video:
Guided course
01:09
Significant Figures Example
Rules for Counting Significant Figures
There are specific rules for determining the number of significant figures in a measurement. For example, all non-zero digits are significant, zeros between significant digits are significant, and trailing zeros in a decimal number are also significant. Familiarity with these rules allows for consistent and accurate communication of measurement precision.
Recommended video:
Guided course
04:40Significant Figures Rules
Measurement Precision
Measurement precision refers to the degree of reproducibility or consistency of a set of measurements. It is often indicated by the number of significant figures in a measurement, which reflects the uncertainty in the measurement process. Understanding precision is essential for evaluating the reliability of experimental data and results.
Recommended video:
Guided course
01:49Significant Figures Precision
Related Practice
Textbook Question
(a) The diameter of Earth at the equator is 7926.381 mi. Round this number to three significant figures and express it in standard exponential notation.
2
views
Textbook Question
Round each of the following numbers to four significant figures and express the result in standard exponential notation: (e) −0.0357202.
1
views
Textbook Question
Round each of the following numbers to four significant figures and express the result in standard exponential notation: (a) 102.53070
1
views
Textbook Question
What is the number of significant figures in each of the following measured quantities? b. 32.40 s
Textbook Question
What is the number of significant figures in each of the following measured quantities? d. 0.00404 L