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torisob [31]
3 years ago
7

In which aqueous solution will the most ZnS dissolve?

Chemistry
2 answers:
sineoko [7]3 years ago
8 0
1) 0.1 M NaCl
_____________________________________________________
lesya [120]3 years ago
3 0

Answer:

1) NaCl 0.1 M

Explanation:

It will dissolve more in the aqueous NaCl solution.

All other solutions have a common ion with salt.

They will saturate faster by the effect of the common ion.

The effect of the common ion occurs when the elements that make up the solute are present in the aqueous solution.

As in the solution, there is already a certain amount of the element the solution will tolerate less solute and will precipitate faster under these conditions, unlike we add this same amount of solute in a solution that does not contain any element of the solute.

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If the temperature and amount of gas stays constant, what will happen to the pressure of a gas if the volume of the container de
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Read 2 more answers
Magnesium hydroxide [Mg(OH)2] is an ingredient in some antacids. How many grams of Mg(OH)2 are needed to neutralize the acid in
Allushta [10]

Answer:

1.95g of Mg(OH)2 are needed

Explanation:

Mg(OH)2 reacts with HCl as follows:

Mg(OH)2 + 2 HCl → MgCl2 + 2H2O

<em>Where 1 mole of Mg(OH)2 reacts with 2 moles of HCl</em>

To solve this question we must find the moles of acid. Then, with the chemical equation we can find the moles of Mg(OH)2 and its mass:

<em>Moles HCl:</em>

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<em>Moles Mg(OH)2:</em>

0.01675 moles HCl * (2mol Mg(OH)2 / 1mol HCl) = 0.3350 moles Mg(OH)2

<em>Mass Mg(OH)2 -Molar mass: 58.3197g/mol-</em>

0.3350 moles Mg(OH)2 * (58.3197g / mol) =

<h3>1.95g of Mg(OH)2 are needed</h3>
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3 years ago
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