分子式计算器
根据经验式和摩尔质量确定化合物的分子式。
g/mol
g/mol
Multiplier (n)
6.0
Multiplier (n) vs Empirical Formula Mass
公式
## How to Find the Molecular Formula ### Formula **n = actual molar mass / empirical formula mass** Multiply all subscripts in the empirical formula by n to get the molecular formula.
计算示例
Empirical formula CH2O (30.03 g/mol), actual molar mass 180.16 g/mol.
- 01n = 180.16 / 30.03
- 02n = 6
- 03Molecular formula = C6H12O6 (glucose)
常见问题
What if n is not a whole number?
It should round to a whole number. If not, check your empirical formula mass and actual molar mass for accuracy.
Can the molecular formula equal the empirical formula?
Yes, when n = 1. For example, water has both empirical and molecular formula H2O.
How do I find the actual molar mass?
From mass spectrometry, freezing point depression, or other experimental methods.
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