1) Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
2) Also, capillaries are located inside the lungs. Therefore, whenever we breathe in air we exchange gasses.
Molar mass of oxygen is: M(O)=16 g/mol Molar mass of carbon is: M(C)=12 g/mol Molar mass of carbon dioxide is: M(CO2)=M(C)+2*M(O) M(CO2)=12 g/mol+2*16g/mol M(CO2)=44 g/mol
<span>Molar mass(M) is the mass of 1 mole of the substance (grams per mole of a compound).</span>
