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Chapter overview
Relative masses, mole calculations, formulae, Avogadro number, and balanced-equation problem solving.
Practice ready
6188 MCQs and 6703 written prompts are ready for focused chapter work.
Topics
4
Recall
12
Cards
24
Topic 1
Relative masses compare atoms and molecules using carbon-12 as the reference standard.
Topic 2
One mole contains Avogadro's number of particles and connects particle count with measurable mass.
Topic 3
Empirical formulae show the simplest ratio of atoms, while molecular formulae show the actual number of atoms present.
Topic 4
Stoichiometry uses balanced equations to convert one known quantity into another required quantity.
Chapter pack
Topic list
Topic 1
Calculate relative atomic mass, molecular mass, and formula mass using atomic masses.
Topic 2
Relate moles, particles, molar mass, and Avogadro's constant in chemical quantities.
Topic 3
Find empirical and molecular formulae from percentage composition and molar mass.
Topic 4
Use balanced equations for mass, mole, volume, and limiting-reagent calculations.
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