原子计数计算器 — 公式

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.

计算示例

How many atoms in 12 g of carbon-12?

  1. Moles = 12 / 12.011 = 0.999 mol
  2. Atoms = 0.999 × 6.022 × 10^23
  3. Atoms ~ 6.02 × 10^23