## The mole and the Avogadro constant

The Avogadro constant as the number of particles in a mole. The mole as applied to electrons, atoms, molecules, ions, formulas and equations. The concentration of a substance in solution, measured in mol dm-3. [Students will not be expected to recall the value of the Avogadro constant] Assessment and practical skills Students should be able to carry out calculations: • using the Avogadro constant

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