Domanda del libro di testo
Carry out the following operations and express the answers with the appropriate number of significant numbers. (c) (3.29×104)(0.2501)
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Ch.1 - Introduction: Matter, Energy, and Measurement
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- 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: 9780137542970Non è quello che usi tu?Cambia libro di testo
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Brown 15th EditionCh.1 - Introduction: Matter, Energy, and MeasurementProblema 50a
Brown 15th EditionCh.1 - Introduction: Matter, Energy, and MeasurementProblema 50aCapitolo 1, Problema 50a
Carry out the following operations and express the answers with the appropriate number of significant numbers. (a) 320.5 − (6104.5/2.3)
Guida verificata passo dopo passo1
Identify the operations to be performed: subtraction and division.
Perform the division first: \( 6104.5 \div 2.3 \).
Determine the number of significant figures for the division result. The number 6104.5 has 5 significant figures, and 2.3 has 2 significant figures, so the result should have 2 significant figures.
Subtract the division result from 320.5: \( 320.5 - \text{(division result)} \).
Determine the number of significant figures for the subtraction result. The number 320.5 has 4 significant figures, so the final answer should be rounded to the least number of decimal places present in the numbers involved in the subtraction.
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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. When performing calculations, the result should be reported with the same number of significant figures as the measurement with the least number of significant figures to ensure accuracy.
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01:09
Significant Figures Example
Order of Operations
The order of operations is a set of rules that dictates the sequence in which calculations should be performed to ensure consistent results. The common acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) helps remember this order. In the given question, division must be performed before subtraction to arrive at the correct answer.
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03:10Scientific Notation Mixed Operations
Arithmetic Operations with Decimals
When performing arithmetic operations with decimal numbers, it is essential to align the decimal points and maintain precision throughout the calculation. For subtraction, the result should be rounded to the least precise decimal place of the numbers involved. This ensures that the final answer reflects the accuracy of the original measurements.
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Percorso guidato
03:10Scientific Notation Mixed Operations
Pratica correlata
Domanda del libro di testo
Carry out the following operations and express the answers in exponential notation with the appropriate number of significant figures.
a. 2.791×104 + 8.76×103
b. 4.67×102 − 5.4437×104
c. (2.481×10−2 + 7.33×10−4) × (1.924×10−2 + 6.70)
d. (1.3×10−4 − 3.746×10−2)/(1.3×102 − 3.746×104)
Domanda del libro di testo
Carry out the following operations and express the answers with the appropriate number of significant numbers. (a) 14.3505 + 2.65 (b) 952.72 - 73.4201
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Domanda del libro di testo
You have a graduated cylinder that contains a liquid (see photograph). Write the volume of the liquid, in milliliters, using the proper number of significant figures.
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Domanda del libro di testo
Carry out the following operations and express the answers in exponential notation with the appropriate number of significant figures.
a. 2.791×104 + 8.76×103
b. 4.67×102 − 5.4437×104
c. (2.481×10−2 + 7.33×10−4) × (1.924×10−2 + 6.70)
d. (1.3×10−4 − 3.746×10−2)/(1.3×102 − 3.746×104)
Domanda del libro di testo
Carry out the following operations and express the answers with the appropriate number of significant numbers. (d) 0.0588/0.677
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