Moving to the next question prevents changes to this Question 11 In closed system of non-conservative pollutant with a half-life equal to 693 days, if the initial concentration of the polluant 5 me, me te concent the pollutant after 5 days? O 0.4 mg/liter O 0.25 mg/liter O 0.5 mg/liter 0.303 mg/liter