How much carbon dioxide do we exhale in one day? Or how much air do we inhale on average in a day?

Question

How much carbon dioxide do we exhale in one day?

Or how much air do we inhale on average in a day?

The air we breath in (inhale) is roughly 78% by volume nitrogen, 21% oxygen plus small percentage of other trace elements such as argon etc. gases.

We exhale roughly 4% - 5% carbon dioxide (per web search, others gave a higher percentage).

I need a rough figure on average per person:

1) how much carbon dioxide do we exhale in one day?

2) how much nitrogen do we inhale in one day?

Answer 1

http://mistupid.com/chemistry/aircomp.ht...

The website above tells you the air composition, listing a wide variety of gases.

http://en.wikipedia.org/wiki/Lung_volume...

That tells you above lung volumes and air intake.

The rest is just simple math which I'm sure you can figure out on your own.

Answer 2

It's after the pub..footy season not started..can't believe I'm answering this stuff..neway..ave resp rate =15 inspirs/min

tidal vol of lungs=0.5l=10.8m^3/day ..inhaled and exhaled. We inhale zero net N2/day!

From ruff research conducted in lst 10 min.. a match burns approx 80% less time in exhaled air compared to atmospheric air.* This would indic8 that exhaled air contains about 16.8% O2 and 4.2% CO2.

So..u exhale 10.8m^3 of breathed air ..of which 8.42m^3 is N2..1.61m^3 is O2..an 0.45m^3 is CO2

*inside somerfield plastic bag since you ask..ave of 6 timed trials..?!