Chapter 10: The Mole
Chapter 10: The Mole
Chemistry
Section 10.1: Measuring Matter
Counting Particles:
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• The __________ is the SI base unit used to measure the amount of a substance.
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• The number is called __________ __________.
Converting Between Moles and Particles:
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conversion factor –
Example (# of molecules in 3.50 mol of sucrose):
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# of representative particles ×
Example:
Section 10.2: Mass and the Mole
The Mass of a Mole:
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• __________ __________ is the mass in grams of one mole of any pure substance.
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Using Molar Mass:
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# of moles ×
Example:
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Section 10.3: Moles of Compounds
Chemical Formulas and the Mole:
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The Molar Mass of Compounds:
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Converting Moles of a Compound to Mass:
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Example:
Converting the Mass of a Compound to Number of Particles:
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Section 10.4: Empirical and Molecular Formulas
Percent Composition:
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% by mass (element) =
• The percent by mass of each element in a compound is the __________ __________ of a compound.
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% by mass =
Emperical Formula:
• The __________ __________ for a compound is the smallest whole-number mole ratio of the elements.
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Molecular formula of hydrogen peroxide =
Emperical formula of hydrogen peroxide =
Molecular Formula:
• The __________ __________ specifies the actual number of atoms of each element in one molecule or formula unit of the substance.
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Section 10.5: Formulas of Hydrates
Naming Hydrates:
• A __________ is a compound that has a specific number of water molecules bound to its atoms.
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Analyzing Hydrates:
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Use of Hydrates:
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