Calculateur de Nombre d'Atomes
Calculez le nombre d'atomes dans un échantillon donné.
g
g/mol
Number of Atoms
601,648,488,885,188,650,000,000.000
Moles0.9991 mol
Number of Atoms vs Mass of Element
Formule
## How to Count Atoms ### Formula **N = (mass / atomic mass) × 6.022 × 10^23** Convert grams to moles, then moles to atoms using Avogadro's number.
Exemple Résolu
How many atoms in 12 g of carbon-12?
- 01Moles = 12 / 12.011 = 0.999 mol
- 02Atoms = 0.999 × 6.022 × 10^23
- 03Atoms ~ 6.02 × 10^23
Questions Fréquentes
How many atoms are in one mole?
6.022 × 10^23 atoms, which is Avogadro's number.
Does this work for molecules too?
For molecules, this gives the number of molecules. To get total atoms, multiply by atoms per molecule.
Why is Avogadro's number so large?
Because atoms are incredibly small. It takes about 6 × 10^23 of them to make a countable, weighable amount.
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