This seems like an error, but I wanted to get someone else's opinion in case I am missing something:
View attachment 179652
TBR says that the correct answer is B. I put D. They said that the reason statement III is not true, is because "Expiration occurs to displace the carbon dioxide, so it must have a greater mole fraction of carbon dioxide than oxygen."
The reason that I think it is wrong is because exhaled air is something...
TBR GChem Ch 6. Question 39 - Composition of exhaled air.
View attachment 179652
TBR says that the correct answer is B. I put D. They said that the reason statement III is not true, is because "Expiration occurs to displace the carbon dioxide, so it must have a greater mole fraction of carbon dioxide than oxygen."
The reason that I think it is wrong is because exhaled air is something...
TBR GChem Ch 6. Question 39 - Composition of exhaled air.