The Mole and The Avogadro Constant

AQA AS-level ChemistryAmount of SubstanceLesson 4 of 33

The easiest way of counting how many particles there are in a substance is to find its mass. There are 6.02 x 10²³ atoms in 12g of carbon-12. It follows that if a magnesium-24 atom is twice the mass of a carbon-12 atom then there are 6.02 x 10²³ atoms in 24g of magnesium-24.

More in Amount of Substance

• Relative Atomic Mass
• Relative Molecular Mass
• Relative Formula Mass
• Calculating the Number of Moles
• Example Question - 1
• Example Question - 2
• Mass Concentration
• Example Question - 1

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