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agate_ t1_j7f6jdb wrote

Not by much. Thermal conductivity in gases happens by molecules gaining thermal energy and moving to a colder place. Adding more molecules gives you more energy carriers, but they can’t move as far before bumping in to each other. So the thermal conductivity of most gases increases only slightly with pressure.

If you get near the boiling point, or the pressure is so low the molecules fly the length of your chamber without bumping into anything, the situation is different.

https://www.electronics-cooling.com/1998/09/the-thermal-conductivity-of-gases/

https://www.engineeringtoolbox.com/amp/air-properties-viscosity-conductivity-heat-capacity-d_1509.html

https://www.engineeringtoolbox.com/amp/methane-thermal-conductivity-temperature-pressure-d_2021.html

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JackEddyfier t1_j7g1hyl wrote

But each time they bump into each other they bounce apart with shared energy. So the energy is still conducted but not by the original molecule which began with it.

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