Dear Pandit ji,Can you tell me the amount ofCarbon dioxide
exhaled bypeople in each breath7 Pleasegive me the deta ils.M P
Yadav~ / j a a i !
Dear M P Yadav ji,A person at rest inhales and exhalesabout 500
ml of air with each breath(Biology by Claude A. Villee). This
air
\ ' . )( ) '''\.1 consists of 150 ml of recently inhaled() [ air
that is in the larger air passagesCO and 350 ml of air that has
been in the, ..;: alveoli of the lungs. The recently(Y)
. j inhaled air (or atmospheric air) hasR approximately 0.04%
carbon dioxideby volume, and the alveolar air has
approximately 5.3% carbon dioxide'nJ' .S by volume. Thus, the
average carbonvJ dioxide content of the 500 ml of~ . : : 2 exhaled
air is:>-'0' '2 [(150 mt)J(500 mt) x 0.04% CO} +-Q 00 [(350
mt)J(500 mt) x 5.3% C02l ='i] 12) 3.7% CO 2 by volume, or 5.7%
CO2by weight.
