Equations · equation
Graham's Law of Effusion
Chemistry · 1848
- Equation
- r₁/r₂ = √(M₂/M₁)
- Field
- Chemistry
- Named After
- Thomas Graham
- Symbols
- r rate of effusion through a small opening · M molar mass · subscripts: the two gases compared
- Year
- 1848
Significance
Light molecules escape faster, in inverse proportion to the square root of their mass — why helium balloons deflate overnight, and the principle behind uranium enrichment by diffusion.
Referenced by
element
equation
theory
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