Answer:
7.0 x 10²¹ hemoglobin molecules
Step-by-step explanation:
Volume of blood = 5.0 L = 5,000 mL
Concentration of erythrocytes in blood = 5.0 x 10⁹ erythrocytes/mL
Concentration of hemoglobin in erythrocytes = 2.8 x 10⁸ molecules/erythrocytes
The number of hemoglobin molecules in 5.0 L of blood is given by:
[tex]N= 5,000\ mL*(5.0 * 10^9)\frac{erythrocytes}{mL}* (2.8 * 10^8)\frac{molecules}{erythrocytes}\\N= 7.0*10^{21}\ molecules[/tex]
There are approximately 7.0 x 10²¹ hemoglobin molecules in 5.0 L of blood.
