Chlorination of some drinking water, if carelessly done, can lead to production of small quantities of toxic chlorinated hydrocarbons.
Answer the following statement true (T) or false (F)
True
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What are metalloids?
A. elements that are larger than nonmetals B. elements that are smaller than metals C. elements that have some properties like metals and some like nonmetals D. elements that have properties different than either the metals or the nonmetals E. elements found in asteroids
Why is ranching more common in the Rocky Mountain region than agriculture?
A) Cattle and sheep can graze in areas with marginal soils and little water. B) Cattle and sheep were more profitable than agriculture. C) The long period of snowfall would affect animals less than plants. D) Ranching is not more common in the Rocky Mountains than agriculture.
What designations are used to distinguish between the two forms of an allosteric enzyme?
A) a and b B) D and L C) R and S D) R and T
The chemical union of oxygen with another substance to form a new product is called ____________________
Fill in the blank(s) with correct word