Textbook Question
Calculate the following quantities: (d) number of N atoms in 0.410 mol NH3
Ch.3 - Chemical Reactions and Reaction Stoichiometry
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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Table of contents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Not the one you use?Change textbook
Chapter 3, Problem 35a
Calculate the following quantities: (a) mass, in grams, of 0.105 mol sucrose (C12H22O11)
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Determine the molar mass of sucrose (C_{12}H_{22}O_{11}) by adding the atomic masses of all the atoms in the formula.
Calculate the total molar mass: 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms.
Use the formula: mass (g) = moles × molar mass to find the mass of 0.105 mol of sucrose.
Substitute the values: 0.105 mol and the molar mass of sucrose into the formula.
Perform the multiplication to find the mass in grams.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Molar Mass
Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all the atoms in a molecule. For sucrose (C12H22O11), the molar mass can be determined by adding the molar masses of carbon, hydrogen, and oxygen in the given ratio.
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Molar Mass Concept
Mole Concept
The mole is a fundamental unit in chemistry that quantifies the amount of substance. One mole contains approximately 6.022 x 10^23 entities (Avogadro's number), which can be atoms, molecules, or ions. Understanding the mole concept is essential for converting between the number of particles and mass, allowing for calculations involving chemical reactions and stoichiometry.
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Mass Calculation
To calculate the mass of a substance from the number of moles, the formula used is: mass (g) = number of moles × molar mass (g/mol). This relationship allows chemists to determine how much of a substance is present in a given number of moles, which is crucial for preparing solutions and conducting reactions in the laboratory.
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