原子计数计算器
计算给定质量或摩尔数的物质中包含的原子数。
g
g/mol
Number of Atoms
601,648,488,885,188,650,000,000.000
摩尔数0.9991 mol
Number of Atoms vs Mass of Element
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?
- 01Moles = 12 / 12.011 = 0.999 mol
- 02Atoms = 0.999 × 6.022 × 10^23
- 03Atoms ~ 6.02 × 10^23
常见问题
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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