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svp [43]
3 years ago
9

Which resources are significantly polluted by heavy metals like mercury? A. soil B. water C. neither A nor B D. both A and B

Chemistry
1 answer:
Firdavs [7]3 years ago
6 0

Answer: The correct answer is option D.

Explanation:

Mercury is occurs in earth crust but its mining ,combustion of fossil fuel and extraction had led to spreading of mercury pollution not only on lands but in air and water bodies also.  

Mercury settled on land get washed way into water bodies which further gets introduced in life process of living beings in the water and eventually effecting the whole food chain or web.

Hence, from the the given options the correct option is (D).

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When a capacitor has a potential difference between the plates it is said to be ? . one plate has an excess of electrons and one
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When a capacitor has a potential difference between the plates it is said to be Constant.

Both plates have different charge which signifies that one has higher potential than the other.

Therefore, when we join them in parallel, charge will flow from higher to lower. and it continued to flow until equilibrium (the entire process took only a few seconds), indicating that the potential remains constant.

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Sodium Chloride is an ionic compound. Its molar mass is 58.44g. One formula unit of NaCl consists of one____, whose chemical sym
saul85 [17]

Answer: One formula unit of NaCl consists of one cation, whose chemical symbol is Na^+ and one anion whose chemical symbol is Cl^-

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For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

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