The optimum liquid alum dose from the jar tests is 10 mg/l. Determine the setting on the liquid alum chemical feeder in millilitres per minute when the flow is 1900GPM. The liquid alum delivered to the plant contains 642.3 milligrams of alum per millilitre of liquid solution

Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m