Mathematics, 06.01.2020 23:31 michael1295
Aone-million-liter pond is contaminated by a chemical pollutant with a concentration of 20 g/l. the source of the pollutant is removed, and pure water is allowed to flow into the pond at a rate of 1900 l/hr. assuming that the pond is thoroughly mixed and drained at a rate of 1900 l/hr, how long does it take to reduce the concentration of the solution in the pond to 30% of the initial value?
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Aone-million-liter pond is contaminated by a chemical pollutant with a concentration of 20 g/l. the...
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