How can 1 liter gasoline produce 2 kilogram CO2?

Question

Yesterday I was in a museum (Museon, Den Haag) where was said that 1 liter gasoline produces more then 2 kilogram CO2. Please explain this.

In: Chemistry

Answer 1

CO2 contains oxygen in addition to carbon. The carbon comes from the gasoline and the oxygen comes from the air. Most of the mass of CO2 was already in the atmosphere as O2.