If a container filled with pure oxygen and fitted with leak-proof valves were to be dumped into the exosphere at night, would the contained oxygen condense?
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According to this article from the NASA web site, in the vicinity of the earth the temperature in the shade is -156C. The boiling point of oxygen at atmospheric pressure is -183C, so if the pressure in your container is at or less than atmospheric pressure the oxygen will not condense. The NASA article doesn't say what is keeping the temperature at -156C, rather than the 2.7K of the microwave background. Possibly it's thermal radiation from the Earth. |
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Since you have not given any parameters, I suggest you have a look at this question. From the phase diagram you can deduce the boiling point given the conditions you assume inside the container. |
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