Avogadro Calculator

Calculate Avogadro's number, moles, particles, and molar mass conversions using fundamental chemistry relationships.

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Avogadro's Number

Definition

Nₐ = 6.022 × 10²³ particles/mol

  • • Number of particles in one mole
  • • Fundamental constant of chemistry
  • • Named after Amedeo Avogadro
  • • Used in mole calculations

Key Relationships

  • • Moles = Particles / Nₐ
  • • Particles = Moles × Nₐ
  • • Moles = Mass / Molar Mass
  • • Mass = Moles × Molar Mass
  • • Particles = (Mass / Molar Mass) × Nₐ

Common Molar Masses

Elements

  • • H: 1.008 g/mol
  • • C: 12.011 g/mol
  • • N: 14.007 g/mol
  • • O: 15.999 g/mol
  • • Na: 22.990 g/mol
  • • Cl: 35.453 g/mol

Compounds

  • • H₂O: 18.015 g/mol
  • • CO₂: 44.009 g/mol
  • • NaCl: 58.443 g/mol
  • • C₆H₁₂O₆: 180.156 g/mol
  • • CaCO₃: 100.087 g/mol
  • • H₂SO₄: 98.079 g/mol

Examples

  • • 1 mole H₂O = 18.015 g
  • • 1 mole CO₂ = 44.009 g
  • • 1 mole NaCl = 58.443 g
  • • 1 mole C₆H₁₂O₆ = 180.156 g