Question

what would happen if c02 combines with hemoglobin

Answer 1

Hemoglobin can bind to four molecules of carbon dioxide. ... Thus, one hemoglobin molecule can transport four carbon dioxidemolecules back to the lungs, where they are released when the molecule changes back to the oxyhemoglobin form.

Answer 2

hemoglobin by combining with carbon monoxide led to the death of the individual due to suffocation. the capillaries of the circulatory system deliver
the oxygen-rich blood to the tissues of the body.
 
Hope this helps!