To lower the pH of the water in a cooling tower, you should add the correct amount of _____
a. sodium bicarbonate
b. alkali
c. chromate
d. sulfuric acid
d
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If 12x + 8 - 3x = 35, what is x?
What will be an ideal response?
A skeletal structure that allows a pig to be comfortable on concrete will have a top line that is:
a. almost level c. slanted upward b. slanted downward d. strongly arched
In various parts of the world, soil phosphorus is associated with which of the following environmental problems?
A) eutrophication of lakes because of a build-up of soil P in the watersheds B) soil degradation because of depletion of soil phosphorus C) toxic levels of phosphate in groundwater supplies D) both A and B E) all of the above
Kinetic energy is:
A) An energy source with promise that has not found practical application. B) Stored energy. C) Energy in motion. D) Purely theoretical.