Carbon emissions

[RoseTattoo]

Have I got something wrong?
I understand that one liter of petrol weighs 0.72 kg.
I also understand that 1 liter of petrol gives off 2.33 kg of Carbon in emissions.
Are these figures correct and if so can someone explain the physics of that?

 

[lxi]

the majority (over 70%) of the CO2 weight is made up of the oxygen which is consumed from the air and does not originate from the petrol

 

[KillerHERTZ]

the majority (over 70%) of the CO2 weight is made up of the oxygen which is consumed from the air and does not originate from the petrol

This

The Oxygen is also a fuel. Give it time and we will be taxed on this aswell.

 

[renault12ts]

Aviation fuel weighs .72kg, petrol is closer to .74kg.

 

[lxi]

This

The Oxygen is also a fuel. Give it time and we will be taxed on this aswell.

shhhhh .. they'll hear you

 

[RoseTattoo]

the majority (over 70%) of the CO2 weight is made up of the oxygen which is consumed from the air and does not originate from the petrol

Okay, I could believe that. In that case, if someone doesn't mind answering and I am not being too dumb,
1) how much oxygen is burnt per liter of petrol in combustion?
2) does this have any impact in terms of depleting oxygen supplies and can this be quantified?
3) I have some vague recollection that Co2 is a basic input to photosynthesis, so;
i) is this correct?
ii) is all of the CO2 consumed in this way?
iii) how does the Co2 translate itself into carbon and where does the resulting carbon reside?

 

[Gridlock]

1) Depends
2) Yes, and yes, but not in this text box
3) i) Yes
ii) No
iii) Carbon cycle - Wikipedia, the free encyclopedia