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s2008m [1.1K]
3 years ago
10

Mercury is often released into water bodies with industrial effluents, where it is then converted to the compound form methylmer

cury. Methylmercury is easily absorbed by aquatic organisms.
Research suggests that the presence of mercury seriously decreases the reproductive rate of fish-eating birds, like heron, and causes other notable harmful effects. On the other hand, the small fish on which the herons prey are not significantly affected.

Explain why the toxic effects of mercury is significant in herons, but not in the fish they eat.
Chemistry
1 answer:
sergeinik [125]3 years ago
7 0
 This is more to do with Bioaccumulation of mercury, where the mercury is absorbed into the issue of animals, and so animals higher in the food chain consume a lot of tissue matter hence increasing mercury content in their system.
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Mass increases since its going from liquid to solid.

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Explanation: Valency can be defined as the combining power of an element. It is the valency that dictates the value an element will have when writing a chemical formula for its compound.

MgX is a compound of magnesium and an element X. The valency of magnesium in most of its compound is +2. Now for the 2 to have been absent in the chemical formula, this shows that the element X itself have a valency if -2 for the valencies of both to have canceled out.

Now considering the element potassium, it is an alkaline metal belonging to group 1 of the periodic table. Hence, it is expected that it has a valency of +1

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2 years ago
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Consequently, what happens when gas obtained by heating slaked lime and ammonium chloride is passed through copper sulphate solution? The HCl in the gas mixture will form hydrochloric and the H+ will react with some of the NH3(aq), forming NH4^+, and with some of the SO4^2-, forming HSO4^-.

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As it is known that there are two types of properties. These are extensive and intensive.

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Intensive properties : Properties that do not depend on the size or amount of system. For example, density, melting point, specific heat capacity etc.

On the basis of these properties water and ethanol are distinguished as follows.

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Thus, we can conclude that properties like density, melting point, specific heat capacity can help a chemist distinguish between ethanol and water.

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3 years ago
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