免费摩尔质量计算器
根据化学式计算化合物的摩尔质量。
g/mol
g/mol
g/mol
摩尔质量
180.156 g/mol
Molar Mass vs Atomic Mass of Element A
公式
## How to Calculate Molar Mass ### Formula **Mw = sum of (atomic mass × count) for each element** Look up atomic masses on the periodic table and multiply by the subscript in the formula.
计算示例
Glucose C6H12O6: C=12.011, H=1.008, O=15.999.
- 01C: 12.011 × 6 = 72.066
- 02H: 1.008 × 12 = 12.096
- 03O: 15.999 × 6 = 95.994
- 04Mw = 72.066 + 12.096 + 95.994 = 180.156 g/mol
常见问题
What is molar mass?
The mass of one mole of a substance in grams, numerically equal to the molecular weight in atomic mass units.
Where do I find atomic masses?
On the periodic table. Common ones: H=1.008, C=12.011, N=14.007, O=15.999, Na=22.990, Cl=35.453.
What if my compound has more than 3 elements?
Set unused element counts to zero and calculate remaining elements separately, then add.
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