sdfsdfsd4195 sdfsdfsd4195 29-02-2024 Chemistry contestada If the fluoride concentration in the rapid mix tank is 1.0 mg/l when the feed stops, how long until the concentration of fluoride is reduced to 0.01 mg/l at the end of the distribution pipe? a) 1 hour b) 5 hours c) 10 hours d) 15 hours
