Gas
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This article may be outdated. It was last updated for LU-356355. These versions were tagged as updating the game mechanics discussed here: EX1-444349
Gases are substances that expand to fill their container.
Mechanics
- Gases will condense into a liquid if cooled 3 °C under their condensation point. The same, liquids will evaporate if heated up 3 °C above their condensation point.
- Unlike liquids, gases will always spread to nearby vacuum tiles (unless less than 1 microgram of the gas is present).
- Elements with a lower density tend to rise above others. In the case of gases with the same density (e.g. Oxygen and Polluted Oxygen), they tend to group together and form different layers.
- There are heat convection mechanics. The heated gasses will rise upwards, while the colder gasses will be pushed down, the gasses with similar temperatures tend to semi-randomly spread horizontally.
- Duplicants can breathe Oxygen and Polluted Oxygen.
- Unless specified, Critters do not breathe, and may survive in any gas as long as other conditions are met.
- They can also survive in a vacuum.
- Airborn Critters can fly/float in a vacuum.
- Gases will be destroyed when exposed to space, unless protected by Drywall.
- Gas can be stored in a Gas Reservoir.
- Duplicants can be scalded by hot Gases like Steam (excluding Saunas). Wearing an Atmo Suit will protect them.
- Gasses of mass less than 1 gram (not including 1 gram) are readily deleted by adjacent gasses of different element that are at least 1 kg (including exactly 1 kg) that has nowhere else to diffuse to.
List of Gases
Icon | Name | Condensation point | Condenses into | SHC | TC | Light Absorption | Radiation Absorption | Density [g/mol] | Notes |
---|---|---|---|---|---|---|---|---|---|
Aluminum Gas | 2470.00 | Molten Aluminum | 0.91 | 2.5 | 50% | 7% | 63.546 | ||
Carbon Dioxide | -48.15 | Liquid Carbon Dioxide | 0.846 | 0.0146 | 10% | 8% | 44.01 | ||
Carbon Gas | 4826.85 | Liquid Carbon | 0.71 | 1.7 | 30% | 8% | 12.0107 | ||
Chlorine Gas | -34.60 | Liquid Chlorine | 0.48 | 0.0081 | 20% | 7% | 34.453 | ||
Polluted Oxygen | -182.96 | Liquid Oxygen | 1.01 | 0.024 | 10% | 8% | 15.9994 | ||
Copper Gas | 2560.85 | Molten Copper | 0.386 | 1 | 50% | 6% | 63.546 | ||
Gold Gas | 2855.85 | Molten Gold | 0.1291 | 1 | 50% | 3% | 196.966569 | ||
Hydrogen Gas | -252.15 | Liquid Hydrogen | 2.4 | 0.168 | 10% | 9% | 1.00794 | ||
Iron Gas | 2749.85 | Molten Iron | 0.449 | 1 | 50% | 6% | 55.845 | ||
Cobalt Gas | 2926.85 | Molten Cobalt | 0.42 | 1 | 50% | 6% | 58.9 | ||
Lead Gas | 1749.00 | Molten Lead | 0.128 | 3.5 | 50% | 8% | 196.966569 | ||
Mercury Gas | 356.75 | Mercury | 0.14 | 8.3 | 50% | 2% | 200.59 | ||
Natural Gas | -161.50 | Liquid Methane | 2.191 | 0.035 | 25% | 7% | 16.044 | ||
Niobium Gas | 4743.85 | Molten Niobium | 0.265 | 1 | 50% | 5% | 92.9 | ||
Nuclear Fallout | 66.85 | Liquid Nuclear Waste | 0.265 | 1 | 50% | 3% | 92.9 | emits 16.5 rads/cycle per 1000kg mass | |
Oxygen | -182.96 | Liquid Oxygen | 1.005 | 0.024 | 0% | 8% | 15.9994 | ||
Phosphorus Gas | 280.45 | Liquid Phosphorus | 0.7697 | 0.236 | 50% | 7% | 30.973762 | ||
Rock Gas | 2356.85 | Magma | 1 | 0.1 | 50% | 7% | 50 | ||
Salt Gas | 1464.85 | Molten Salt | 0.88 | 0.444 | 10% | 7% | 50 | ||
Sour Gas | -161.50 | Liquid Methane 67.00% Sulfur 33.00% | 1.898 | 0.018 | 25% | 5% | 19.044 | ||
Steam | 99.35 | Water | 4.179 | 0.184 | 10% | 8% | 18.01528 | ||
Steel Gas | 3826.85 | Molten Steel | 0.49 | 1 | 50% | 7% | 54.97 | ||
Sulfur Gas | 337.00 | Liquid Sulfur | 0.7 | 0.2 | 10% | 7% | 32 | ||
Super Coolant Gas | 436.85 | Super Coolant | 8.44 | 1.2 | 50% | 6% | 190 | ||
Tungsten Gas | 5929.85 | Molten Tungsten | 0.134 | 1 | 50% | 3% | 183.84 | ||
Ethanol Gas | 78.35 | Ethanol | 2.148 | 0.167 | 50% | 7% | 46.07 |
Trivia
- In real life, for gasses near dupe-safe temperatures and pressures (masses), the molecular mass that Oxygen Not Included uses is a good approximation of density. This is because molar volume (the amount of volume a certain number of molecules take up) is mostly constant across all gasses. This is in opposition to liquids as well as gasses at very low temperatures and/or very high pressures, for which each substance would have very different molar volumes.
- Real-life oxygen has a "density" (molecular mass) of about 32 g/mol (not 16), as there are two oxygen atoms of 16 mass each. Similarly, real-life chlorine has a molecular mass of about 71 g/mol (not 30.5) and would sink below carbon dioxide, while hydrogen has a molecular mass of about 2g/mol (not 1). Many other elements often also have multiple atoms per molecule and would have a higher molecular mass than listed in the game, although these would be found outside dupe-safe temperatures.