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What the mole measures

What the mole measures

Concept map linking amount of substance in the centre to particles, mass, solution concentration, gas measurements and balanced equation ratios Amount of substance, symbol nnn, tells us how many specified entities are present. The entities could be atoms, molecules, ions or electrons. One mole contains 6.02×10236.02 \times 10^{23}6.02×1023 entities, called the Avogadro constant, L=6.02×1023 mol−1L = 6.02 \times 10^{23} \, \text{mol}^{-1}L=6.02×1023mol−1.

Amount of substance Lesson

  1. A Level
  2. /Chemistry
  3. /Amount of substance

Step-by-step lessons on Edexcel A Level Chemistry Amount of substance. Each one builds up to exam-style questions. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.

Lessons