Mixture Inputs
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Must be > 0
Results use the same unit
| # | Gas Name | Mole Fraction (yi) | Moles (ni) | Partial Pressure | Actions |
|---|---|---|---|---|---|
| Totals | 0.0000 | 0.0000 | 0.0000 atm | ||
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How it works
Dalton's Law: Pi = yi × Ptotal. If you enter moles, the calculator computes yi = ni / Σni. Partial pressures are then reported in the same unit as your total pressure.
Tip: In fraction mode, the sum of yi should be 1.00. The tool auto-normalizes if you enter moles.
Example Data
Click "Load Air Example" to prefill this classic mixture at 1 atm.
| Gas | yi | Pi @ 1 atm |
|---|---|---|
| N2 | 0.7808 | 0.7808 atm |
| O2 | 0.2095 | 0.2095 atm |
| Ar | 0.0093 | 0.0093 atm |
| CO2 | 0.0004 | 0.0004 atm |
| Total | 1.0000 | 1.0000 atm |