Mole and Avogadro constant
Mole and Avogadro constant
Formula
n = mass / Mr
Real World
A pharmacist dispensing 12.04 × 10²³ ibuprofen molecules is handling exactly 2 moles — a concept that lets manufacturers scale from atomic recipes to factory-sized batches.
Exam Focus
Always state which particles a mole refers to (atoms, molecules, ions) — examiners penalise vague use of 'particles'.
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