A drug concentration C(t)=C0e−ktC(t) = C_0 e^{-kt}C(t)=C0e−kt. If 50%50\%50% is cleared in 444 hours, what is kkk?
ln(2)/4\ln(2)/4ln(2)/4
4ln(2)4\ln(2)4ln(2)
ln(0.5)/4\ln(0.5)/4ln(0.5)/4
0.5/40.5/40.5/4