Essay
Based on Mercury's peak temperature of about 700 K, what would the average molecularspeed of carbon dioxide be? How does this compare to Mercury's escape velocity? If Mercury'satmosphere initially had substantial carbon dioxide, in line with what is believed about the earlyatmospheres of the other terrestrial planets, do you think Mercury would have retained thisatmosphere? Why/why not? Would your answer change if you considered only Mercury'scoldest regions that are around 125 K?
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