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Graham's Law

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What is Graham's Law?

Graham's law of effusion states that the rate of effusion (or diffusion) of a gas is inversely proportional to the square root of its molar mass. Mathematically, rate₁/rate₂ = √(M₂/M₁), where M represents the molar mass of each gas. This law explains why lighter gases such as hydrogen and helium diffuse much faster than heavier gases and is used in isotope separation processes.

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Term Graham's Law
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Frequently Asked Questions

Graham's law of effusion states that the rate of effusion (or diffusion) of a gas is inversely proportional to the square root of its molar mass. Mathematically, rate₁/rate₂ = √(M₂/M₁), where M represents the molar mass of each gas. This law explains why lighter gases such as hydrogen and helium diffuse much faster than heavier gases and is used in isotope separation processes.

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Gadolinium Gd Gallium Ga Galvanic Cell Zn(s)|ZnSO₄(aq)||CuSO₄(aq)|Cu(s); E°_cell = +1.10 V Galvanizing Zn(s) coated on Fe; Zn → Zn²⁺ + 2e⁻ (sacrificial anode) Gamma Radiation γ radiation; λ < 0.01 nm Gamma Ray gamma-Aminobutyric acid C4H9NO2 Gamma-butyrolactone C4H6O2 Gangue Gas PV = nRT; 22.414 L/mol (STP) Gay-Lussac's Law P/T = k (constant V, n); P₁/T₁ = P₂/T₂ Geiger Counter
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