How much carbon dioxide is exhaled if an animal Inhales 32.0g #O^2#?
You should ask this in the Biology section.
Of course we require oxygen for respiration. But not all the oxygen we inhale is converted to carbon dioxide. If this were the case, artificial respiration and the kiss of life could not occur.
Sometimes I ask my students if they are able to perform CPR. They all say the idea is gross. I tell them that I never hope to choke in front of them. CPR and basic first aid to prevent people choking on food should be more widely known.