Avogadro Law Calculator
Enter any three of the four variables (V1, n1, V2, n2) to solve for the unknown using Avogadro's Law.
Avogadro's Law — V1/n1 = V2/n2
mol
mol
Select what to solve for, enter the three known values, and click Calculate.
Result
V2
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Step-by-step Solution
Avogadro's Law Formulas
| Solve for | Formula |
|---|---|
| V1 | V1 = V2 × n1 / n2 |
| n1 | n1 = n2 × V1 / V2 |
| V2 | V2 = V1 × n2 / n1 |
| n2 | n2 = n1 × V2 / V1 |
Valid at constant temperature and pressure for ideal gases.
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Summary
Enter any three of the four variables (V1, n1, V2, n2) to solve for the unknown using Avogadro's Law.
How it works
- Select which variable you want to solve for (V1, n1, V2, or n2).
- Enter the known values in their respective fields with appropriate units.
- Click "Calculate" to apply Avogadro's Law and compute the missing value.
- Review the result and the step-by-step formula breakdown shown below the output.
- Use "Reset" to clear all fields and start a new calculation.
Use cases
- Determine the new volume of a gas after adding or removing moles at constant T and P.
- Find the number of moles when a gas expands or compresses to a new volume.
- Verify laboratory gas measurements in chemistry experiments.
- Solve stoichiometry problems involving gaseous reactants and products.
- Study gas behavior for chemistry exams and homework.
- Cross-check results from manometric experiments.
Frequently Asked Questions
Last updated: 2026-06-18 ·
Reviewed by Nham Vu