Textbook Question
Determine the number of moles of hydrogen atoms in each sample. a. 0.0885 mol C4H10 b. 1.3 mol CH4
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Ch.3 - Molecules and Compounds
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371
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Table of contents
- Ch.1 - Matter, Measurement & Problem Solving93
- Ch.2 - Atoms & Elements94
- Ch.3 - Molecules and Compounds103
- Ch.4 - Chemical Reactions and Chemical Quantities44
- Ch.5 - Introduction to Solutions and Aqueous Solutions69
- Ch.6 - Gases97
- Ch.7 - Thermochemistry85
- Ch.8 - The Quantum-Mechanical Model of the Atom48
- Ch.9 - Periodic Properties of the Elements73
- Ch.10 - Chemical Bonding I: The Lewis Model76
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory70
- Ch.12 - Liquids, Solids & Intermolecular Forces41
- Ch.13 - Solids & Modern Materials40
- Ch.14 - Solutions76
- Ch.15 - Chemical Kinetics90
- Ch.16 - Chemical Equilibrium56
- Ch.17 - Acids and Bases121
- Ch.18 - Aqueous Ionic Equilibrium127
- Ch.19 - Free Energy & Thermodynamics78
- Ch.20 - Electrochemistry87
- Ch.21 - Radioactivity & Nuclear Chemistry60
- Ch.22 - Organic Chemistry115
Chapter 3, Problem 81c
Determine the number of moles of hydrogen atoms in each sample. c. 2.4 mol C6H12
Verified step by step guidance1
Identify the chemical formula of the compound: \( \text{C}_6\text{H}_{12} \).
Determine the number of hydrogen atoms in one molecule of \( \text{C}_6\text{H}_{12} \). There are 12 hydrogen atoms per molecule.
Use the given amount of moles of \( \text{C}_6\text{H}_{12} \), which is 2.4 moles.
Calculate the total number of moles of hydrogen atoms by multiplying the number of moles of \( \text{C}_6\text{H}_{12} \) by the number of hydrogen atoms per molecule: \( 2.4 \text{ mol} \times 12 \text{ H atoms/molecule} \).
The result will give you the total moles of hydrogen atoms in the sample.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Moles and Avogadro's Number
A mole is a unit in chemistry that represents 6.022 x 10^23 entities, such as atoms or molecules. This concept is fundamental for quantifying substances in chemical reactions and allows chemists to convert between the mass of a substance and the number of particles it contains.
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02:41
Moles and Particles Conversion
Chemical Formula Interpretation
The chemical formula of a compound provides information about the types and numbers of atoms present. For example, C6H12 indicates that each molecule contains 6 carbon atoms and 12 hydrogen atoms, which is essential for calculating the total number of hydrogen atoms in a given number of moles.
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Stoichiometry
Stoichiometry is the area of chemistry that deals with the relationships between the quantities of reactants and products in chemical reactions. It allows for the calculation of the number of moles of different elements in a compound, facilitating the determination of how many atoms are present in a sample based on its moles.
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