Two flocculators treat 1.0 m/s and remove flocs larger than 0.02 mm. the settling velocity of the 0.02 mm flocs is measured in the laboratory as 0.22 mm/s at 15 °c. tube settlers of 50.8 mm square honeycombs are inclined at a 50° angle, and their vertical heights are 1.22 m. determine the basin area required for the settler module and the size of each flocculator at 15 °c. 145 marbel

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

wher is the rest of the question