## CO² concentration over time

## CO² concentration over time

(OP)

Hi all,

I don't know how to calculate following problem:

I have a room with a certain concentration of CO

CO

CO

CO

What should the initial CO² concentration be to have the minimal CO

Any help?

*edit*

I don't know how to calculate following problem:

__Problem:__I have a room with a certain concentration of CO

_{2}. There is a leak which causes the concentration to fall over time.__Known:__CO

_{2}concentration start = 43.0%CO

_{2}concentration after 10 minutes = 22.2%CO

_{2}concentration air outdoors = 0.04%__Asked:__What should the initial CO² concentration be to have the minimal CO

_{2}concentration after 10 minutes = 38% ?Any help?

*edit*

## RE: CO² concentration over time

## RE: CO² concentration over time

## RE: CO² concentration over time

A common engineering assumption would be that dC/dT is constant and that C(t) is linear and determine dC/dT from 2 points where the change in C and the change in time is known, and you're doing 7th or 8th grade math in the US, or 5th grade math in many other countries. That's as simple as it gets. Beyond that responsibility for passing on this, getting this right or wrong is yours.

## RE: CO² concentration over time

TTFN (ta ta for now)

I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg

FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers

## RE: CO² concentration over time

another day in paradise, or is paradise one day closer ?