Avogadro's Number Calculator

Convert Between Moles and Particles

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Moles to Particles Calculator

Calculate the number of particles from moles using Avogadro's number.

Number of Particles: -

Particles to Moles Calculator

Convert number of particles to moles using Avogadro's number.

Number of Moles: -

Mass Conversion Calculator

Calculate mass from number of particles using molecular weight.

Mass: -

Understanding Avogadro's Number

What is Avogadro's Number?

Avogadro's number (NA) is the number of particles in one mole of a substance: 6.02214076 × 10²³.

1 mole = 6.02214076 × 10²³ particles

Applications

Avogadro's number is used in:

  • Stoichiometry calculations
  • Gas law problems
  • Solution chemistry
  • Molecular mass calculations

Related Concepts

Important relationships:

  • Molar mass
  • Molecular weight
  • Atomic mass units
  • Stoichiometry

Historical Context

Key developments:

  • Amedeo Avogadro's hypothesis
  • Modern measurement methods
  • SI unit definition
  • Scientific applications