分子计数计算器 — 公式
## How to Count Molecules
### Formula
**N = (mass / molar mass) × 6.022 × 10^23**
### Formula
**N = (mass / molar mass) × 6.022 × 10^23**
计算示例
How many molecules in 18 g of water?
- Moles = 18 / 18.015 = 0.999 mol
- Molecules = 0.999 × 6.022 × 10^23 ~ 6.02 × 10^23