Number of molecules in a given system
Number of molecules refers to the number of molecules in a given system, and the symbol is N.
- Chinese name
- Molecular number
- Foreign name
- number of molecules
interpretation
The number of molecules is dimensionless. If necessary, use the counting unit "piece" as its unit. It is also commonly used in chemical engineering“ Number of basic units ”(number of essential entities). The symbol remains N. but molecule It is not necessarily a basic unit, but a basic unit can be a molecule. Calculation formula of molecular number: N=n · N A
N is the number of particles, NA is Avogadro constant (6.02 × 10 for general calculation twenty-three ） N is the amount of matter of the particle. 
