How to do this lab for Chem!! For a lab, we had to determine how much carbon dio

Question

How to do this lab for Chem!!

For a lab, we had to determine how much carbon dioxide we expel using displacement of water. In our experiment, we filled a two liter bottle with water and placed it upside down in a water-filled dishpan. Then a tube was connected from the mouth of the bottle. One person breathed into the tube and water was displaced. We then found the water displaced to be 367 mL. The lab tells us that carbon dioxide is 4% of air BY MASS. How do we calculate this if the displacement is in mL??

Explanation / Answer

density of water = 1g/ml

so weight of water displaced = 367g = weight of air expelled

co2 is 4% of air

so weight of co2 = 4*367/100 = 14.68 gm

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