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# How many grams of C02 per breath?

Given Info:

% by volume C02 in exhaled breath=4%

Density of CO2 gas= 1.80 g/L

Volume of Lungs= 1.5 L

How many grams of CO2 per breath?

### 1 Answer

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- Mike WLv 61 decade agoFavorite Answer
One breath is assumed to be lung volume. Thus volume is 1.5 L. That contains 4% CO2. Hence you can calculate the volume of CO2 (4% of 1.5 L).

The density of CO2 is 1.8. So if voulume of CO2 is in liters, then multiply by 1.8 to get the mass in grams.

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