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Science & Environment

Graham's Law Effusion Rate Calculator

Compare effusion or diffusion rates of two gases based on their molar masses using Graham's law.

Your inputs

Change any value to update the result instantly.

Science & Environment
g/mol
g/mol
mol/s

Rate ratio (1/2)

3.9841

Rate of gas 1

3.9841 mol/s

Molar mass gas 1

2.016 g/mol

Molar mass gas 2

32 g/mol

Formula and working

Rate1/Rate2 = √(M2/M1)

  1. 1

    Collect the inputs

    Molar mass of gas 1 = 2.016 g/mol; Molar mass of gas 2 = 32 g/mol; Known rate of gas 2 = 1 mol/s

  2. 2

    Apply the formula

    Rate1/Rate2 = √(M2/M1)

  3. 3

    Result

    Rate ratio (1/2) = 3.9841

Frequently asked questions

Important limitation

This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.

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