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exis [7]
3 years ago
12

Shallow pumping wells can often supply drinking water at a very low cost, but have a greater risk of contamination compared to d

eeper wells. Why?
Chemistry
2 answers:
aleksley [76]3 years ago
7 0

hey i'm late but if any of other readers need help on this question here it is Surface impurities easily reach the shallow water source.  ask me if you need any help why

zlopas [31]3 years ago
5 0

The deeper the the water is the freasher/ cleaner it is

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Convert 3.82 inches to km
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3 years ago
(a) Name two types of subatomic particles contained in the nucleus of the atom and state the charge associated with each.
maks197457 [2]

Answer:

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4 years ago
At a certain temperature, the ph of a neutral solution is 7.78. what is the value of kw at that temperature? express your answer
Strike441 [17]
Given the pH of the solution, we can determine [H⁺]. 

pH = -log[H⁺]
[H⁺] = 10⁻⁷·⁷⁸
[H⁺] = 1.659586907 x 10⁻⁸ M

We also know that pOH = 14 - pH. Thus, the pOH is  6.22. Given the pOH of the solution, we can determine [OH⁻]. 

pOH = -log[OH⁻]
[OH⁻] = 10⁻6.22
[OH⁻] =  6.02559586 x 10⁻⁷ M

The ionic product of water Kw, can then be calculated using the following equation.

Kw = [H⁺][OH⁻]
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Kw = 1.0 x 10⁻¹⁴
8 0
4 years ago
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