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I was going to call BS on your claim that a litre of petrol produces 2.3kg of CO2, but the Internets confirm it. It's a surprising amount, even knowing that the

I was going to call BS on your claim that a litre of petrol produces 2.3kg of CO2, but the Internets confirm it. It's a surprising amount, even knowing that the O2 comes from the atmosphere and weighs a lot more.

MauranKilom 6y ago
Makes a lot of sense tbh. C and O have roughly the same atomic weight, and CO2 is about a third C (from the fuel). The fuel of course has a bunch of H but by mass that's only a small fraction. So a given mass of fuel turns into roughly three times as much CO2. With petrol being a bit lighter than water (which is 1 kg/l) the 2.3 kg CO2 per liter is right around the "factor 3" estimate.