Every 500 ml of oxygenated blood can deliver around __________of ${\mathrm{O}}_2$ to the tissues under normal physiological conditions.

Every 100 ml of oxygenated blood can deliver around 5 ml of ${\mathrm{O}}_2$ to the tissues under normal physiological conditions.

 Since 500 ml is given, the amount of ${\mathrm{O}}_2$ would be 25 ml.