The first order rate constant is 1.87*10^-3 /min at 37 degrees C, for reaction of cisplatin, a cancer chemotherapy drug with water. The reaction is Cisplatin + H2O -> cisplatinOH2+ + Cl- Supposing the concentration of cisplatin in the bloodstream of a cancer patient is 4.73*10^-4 M. What will be the concentration after 24 hrs?