What is Avogadro's number?

6.022 × 10^23, the number of particles in one mole of any substance. Named after Amedeo Avogadro.

Does it apply to atoms and molecules equally?

Yes. One mole of atoms = 6.022 × 10^23 atoms. One mole of molecules = 6.022 × 10^23 molecules.

How was Avogadro's number determined?

Multiple methods including X-ray crystallography, electrolysis experiments, and Brownian motion measurements.

Free Avogadro's Number Calculator

Convert between moles and the number of particles using Avogadro's number (6.022 × 10^23).

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Number of Moles

mol

Number of Particles

602,200,000,000,000,000,000,000.000

Number of Particles vs Number of Moles

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How to Use Avogadro's Number

Formula

N = n × 6.022 × 10^23

Where N is the number of particles and n is the number of moles.

Example Calculation

How many molecules in 1 mole of water?

01N = 1 × 6.022 × 10^23
02N = 6.022 × 10^23 molecules

Frequently Asked Questions

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