Calculateur de Nombre de Molécules
Calculez le nombre de molécules dans un échantillon.
g
g/mol
Number of Molecules
601,698,584,512,905,900,000,000.000
Moles0.9992 mol
Number of Molecules vs Mass of Compound
Formule
## How to Count Molecules ### Formula **N = (mass / molar mass) × 6.022 × 10^23**
Exemple Résolu
How many molecules in 18 g of water?
- 01Moles = 18 / 18.015 = 0.999 mol
- 02Molecules = 0.999 × 6.022 × 10^23 ~ 6.02 × 10^23
Questions Fréquentes
What is the difference between atoms and molecules?
Atoms are individual elements; molecules are two or more atoms bonded together. H2O is a molecule with 3 atoms.
How do I find total atoms from molecule count?
Multiply the number of molecules by the number of atoms per molecule.
Does this work for ionic compounds?
Ionic compounds form formula units, not molecules. The math is the same but the result is formula units.
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