Question

which gas do we breathe out during exhalation how will you test the presence of gas​

Answer 1

Explanation:

Inhaled and exhaled air

Inhaled air contains:

more oxygen used to create energy

less carbon dioxide than…

Exhaled air which contains:

more carbon dioxide produced as a waste product of energy production

less oxygen as it has been used in respiration

Gas exchange takes place by diffusion in the alveoli within the lungs. As a result the composition of inhaled and exhaled air is different.

Percentage of gas present in inhaled and exhaled air:

Oxygen2116

Carbon dioxide0.044

Nitrogen7979

NB These figures are approximate.