Question

there are many gases in air and we breath them
In that gases nitrogen is also there and our body has no use of nitrogen so our body exhale all the nitrogen out
so therefore exhale air should be rich in nitrogen but it is told that exhaled air is rich in carbon-dioxide and not in nitrogen? why? give reason​

Answer 1

Our body excrete nitrogen as an excretory product urea not as in the form exhaled air. The carbon dioxide is given out when the glucose molecule breaks in the presence of oxygen.

Answer 2

Answer:

Explanation:

It is true but in this case what happened is when we inhale only oxygen atoms form the reaction of cellular respiration i.e. C6H12O6 + 6O2------>6CO2 +6 H20 + Energy and in this reaction C02 is released as a left material so the concentration of CO2 increases in the air which we are going to exhale and so the air we exhale contains more C02.

Hope it helps. Thanks.