/sci/ - Science & Math

I was redirected from /g/ because I'm a newfag;

If one burns ethanol in an indoor fireplace, how much oxygen does get used, or even better; how much volume of air is depleted (at like 24°C) oxygen-wise per litre (or 100ml) of burned ethanol?

My guess would be to take the reaction formula, take the number of molecules per volume and calculate from that, but I'm not only a tard in chemistry, but am unable to find the numbers I'd need. Maybe someone here can answer.