Intravenous, or IV solutions used in medicine must exert the same osmotic pressure as blood to prevent a net flow of water into or out of the blood cells. The proper concentration for an intravenous NaCl solution is .90g NaCl per 100 mL of water(sometimes referred to as .90% m/v)
If the van't Hoff factor of NaCl is i=1.8, what is the osmotic pressure of blood at body temperature, 37 degree C ? =_____atm