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The mole and Avogadro constant

The mole and Avogadro constant

A mole is a counting unit for particles. One mole of any substance contains approximately 6.02×10236.02 \times 10^{23}6.02×1023 particles. This number per mole is the Avogadro constant, NA=6.02×1023 mol−1N_{\text{A}} = 6.02 \times 10^{23}\,\text{mol}^{-1}NA​=6.02×1023mol−1.

3.2.1 Moles (HT only) Lesson

  1. GCSE
  2. /Chemistry
  3. /3.2.1 Moles (HT only)

Step-by-step lessons covering AQA GCSE Chemistry 3.2.1 Moles (HT only) for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons