Composition of atmospheric air and mean thermal speed
02 Jul 2021 - tsp
Last update 02 Jul 2021
1 min
| Gas type | Partial pressure (mbar) | Mean speed ($\frac{m}{s}$) | Mean molecule mass ($\frac{kg}{mol}$) at 20 Celsius |
|---|---|---|---|
| Nitrogen $N_2$ | $791$ | 471 | 28 |
| Oxygen $O_2$ | $212$ | 440 | 29 |
| Argon $Ar$ | $9.46$ | 394 | 40 |
| Water vapor ($H_2O$) | $\leq 23$ | 587 | 18 |
| Carbon dioxide ($CO_2$) | $0.32$ | 375 | 44 |
| Neon ($Ne$) | $1.8 * 10^{-2}$ | 557 | 20 |
| Helium ($He$) | $5.3 * 10^{-3}$ | 1245 | 4 |
| Krypton ($Kr$) | $1.1 * 10^{-3}$ | 272 | 84 |
| Hydrogen ($H_2$) | $5.1 * 10^{-4}$ | 1761 | 2 |
| Xenon ($Xe$) | $8.7 * 10^{-5}$ | 217 | 131 |
| Ozone ($O_3$) | $2.0 * 10^{-5}$ | 360 | 48 |
This article is tagged: Atmosphere, Partial pressure, Thermal speed, Vacuum
