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Air Composition

Reference data and engineering information about air composition for gases and compressed air applications.

aircomposition

Overview

Engineering reference data for Air Composition in gases and compressed air.

Key Formulas

Ideal Gas Law

PV=nRTPV = nRT

Pressure × Volume = moles × gas constant × temperature.

Boyle's Law

P1V1=P2V2P_1 V_1 = P_2 V_2

At constant temperature.

Charles's Law

V1T1=V2T2\frac{V_1}{T_1} = \frac{V_2}{T_2}

At constant pressure.

Variables

SymbolDescriptionUnit
PPPressurePa
VVVolume
TTTemperatureK
RRGas constant8.314 J/(mol·K)

Data Table

10 rows
Components in dry air / Volume ratio = Molar ratio compared to dry air / Molar mass / Molar mass in air / Atmospheric boiling point data
col0
Nitrogen
Oxygen
Argon
Carbon dioxide1)
Neon
Helium
Methane
Krypton
Hydrogen
Xenon

Source: engineeringtoolbox.com

References