Someone argues that he or she doesn’t drink tap water because it contains thousands of molecules of some impurity in each glass. How would you respond in defense of the water’s purity, if it indeed does contain thousands of molecules of some impurity per glass?
(a) Impurities aren’t necessarily bad, in fact, they may be good for you.
(b) The water contains water molecules and each water molecule is pure.
(c) There’s no defense. If the water contains impurities, it should not be drunk.
(d) Compared to the billions and billions of water molecules, a thousand molecules of something else is practically nothing.
The correct option for the argument that tap water contains millions of impurities.
Answer to Problem 1RAT
The correct option for the argument that tap water contains millions of impurities is option (a).
Explanation of Solution
It is correct that tap water contains millions of impurities, as it is a mixture of water molecules and impurities. But it is also true that most of the impurities are not harmful for the body. Water may contain various compounds depending upon the area like calcium, iron, fluorine, potassium, chlorine and magnesium. Also, it contains dissolved gases like oxygen, hydrogen, etc. these above-mentioned components are not harmful. The harmful compounds are present only in trace amounts, like heavy metals lead, mercury, etc. for such harmful impurities water is purified before being supplied for domestic purposes.
Conclusion:
Therefore, the correct option is option (a).
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