QDM,
This is like the film "The Invasion of the Body Snatchers". It seems they have got you too
Adrian,
So burning .72kg of Avgas creates 2.2kg of C02
I'm really clueless when it comes to this stuff. I must admit I'm a bit stumped. My clueless thinking would be:
If the atomic mass of Carbon is 12 and 16 for Oxygen then for every Carbon atom there would be a bond with two Oxy atoms and so 32/12 = a 2.7 times increase in mass.
So if Avgas is 44% carbon (8/18) and a litre weighed 0.72kg then that would produce 0.32kg of carbon multiplied by 2.7 producing 0.9kg of C02. So 30 litres of fuel would create 27.6kg of C02
Well it would be less because, I presume, inefficiencies produce other stuff besides like CO and H2O.
Haulp!