Avogadro's Number Reference
Reference for Avogadro's number and mole calculations.
Avogadro's Number Reference
Avogadro's Number (NA)
6.022 140 76 x 10²³ mol⁻¹
The number of constituent particles (atoms, molecules, ions) per mole of substance.
Key Relationships
- 1 mole = 6.022 x 10²³ particles
- 1 mole of C-12 = exactly 12 grams
- 1 mole of any gas at STP = 22.4 liters
- Number of particles = moles x NA
- Moles = mass (g) / molar mass (g/mol)
Mole Converter
Example Calculations
Water (H2O): 18.015 g = 1 mol = 6.022 x 10²³ molecules
Table Salt (NaCl): 58.44 g = 1 mol = 6.022 x 10²³ formula units
Iron (Fe): 55.845 g = 1 mol = 6.022 x 10²³ atoms