Chemical and process engineering fundamentals · Thermodynamics
Ideal-gas density estimate
Estimate the density of a pure gas from molar mass, absolute pressure, and absolute temperature using the ideal-gas equation.
Method and scope
ρ = pM/(RT).
Use ideal-gas density estimate for educational calculation or a clearly scoped arithmetic estimate. Intended for Learners, General educational use.
Inputs- Gas molar mass — kg/mol
- Absolute pressure — Pa, kPa, bar
- Absolute temperature — K, °C, °F
SOURCE AND LIMITS
Assumptions: The gas behaves ideally and the entered pressure is absolute pressure. Temperature is absolute.
Limitations: Real-gas deviations can be significant near condensation, at high pressure, or at low temperature.
Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Explore related fields
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