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Originally Posted by gimlet
I had a look at some graphs showing atmospheric pressure for the last 200 years. What I find surprising is there appears to be no dramatic trend of pressure increase. If every gallon (6.5 lbs) of burnt fuel produces 20 lbs of CO2 then the average pressure should be increasing by the carbon addition.
Any thoughts?
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When you burn carbon you use up oxgyen therefore the pressure should remain the same.
eg C + O2 = CO2
However of course we burn hydrocarbons (which also contain hydrogen)
which complicates it a bit because water vapour is produced which is a gas but which eventually condenses. I am not sure if should increase pressure or not.