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Rate of Effusion Calculator — Free Online Tool
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Rate of Effusion Calculator

Calculate gas effusion rate ratios using Graham's Law

Formula: Rate1 / Rate2 = √(M2 / M1)
Graham's Law states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
Gas Molar Masses

Calculation Results

⚠️ Graham's Law assumes ideal gas behavior at low pressures and constant temperature. In real high-pressure systems or heavy gas mixtures, intermolecular forces and molecular volume deviations can affect actual effusion rates.

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