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Table 2
Trace gas concentrations in chemical equilibrium with element abundances N = 2∕13, H = 6∕13, O = 3∕13, and C = 2∕13, where the main constituents are 25% N2, 25% H2 O, 25% CO2, and 25% CH4.
| 200 K | 300 K | 400 K | 500 K | 600 K | 700 K | |
|---|---|---|---|---|---|---|
| H2 | 2 ppb | 5.8 ppm | 390 ppm | 0.52% | 2.9% | 9.5% |
| CO | <1 ppb | <1 ppb | 260 ppb | 39 ppm | 0.11% | 1.2% |
| NH3 | 205 ppb | 4.7 ppm | 23 ppm | 58 ppm | 101 ppm | 130 ppm |
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