Avogadro's number
Try it yourself:
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avogadro
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avogadro gives the exact number of specified elementary entities in one mole: 6.02214076×10²³ mol⁻¹. It links laboratory-scale amounts to atoms, molecules, or ions.
Use it with molarMass and atomicMass. A mole is a count, so always state the entity being counted and maintain molar units throughout the calculation.
Enter avogadro on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.