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3 years ago

The dissociation of a weak electrolyte is suppressed when

2 answers:

8 0

The dissociation of a weak electrolyte is suppressed when A STRONG ELECTROLYTE WITH A COMMON ION IS ADDED TO THE WEAK ELECTROLYTE SOLUTION.

The reactivity series of element is a list of series of metals and their reactivity ranging from the most reactive to the least reactive. In electrolytic chemical reactions, the metals that are at the top of the reactivity series will easily displace out of solution those that are lower in the series. Thus, the dissociation of a weak electrolyte will easily be suppressed by strong electrolytes, when a common ion is added to the solution.

yanalaym [24]3 years ago

5 0

The answer that best completes the given statement above is the first option. The dissociation of a weak electrolyte is suppressed when a strong electrolyte that possesses a common ion is joined to the solution with a weak electrolyte. Hope this answers your question.

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You discover a piece of jewelry that you think might be made of silver. You place the item on a balance and determine that it ha

Amanda [17]

No, this item is not made of pure silver because if it has been made from pure silver that it would have displaced only 1.16cm³ of water but due to the addition of some other low-density element it displaces 1.9cm³ of water.

For pure silver

density of pure silver is = 10.49 g/cm³

mass of silver = 12.2 gram

since, density = mass/volume

volume = mass/density

= 12.2/10.49 cm³

= 1.16 cm³

But the actual displaced water is 1.9cm³, which means some other element of lower density has been added.

Therefore, it is clear that the given jewelry is not made of pure silver.

Learn more about silver here:-brainly.com/question/17086277

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4 0

1 year ago

What is formed when sediment is blown against an obstacle and settles behind it

Naddik [55]

The answer should be "Dunes"

4 0

3 years ago

What word best describes volume

alekssr [168]

Answer:

volume is the amount of space something occupies

Explanation:

7 0

4 years ago

Read 2 more answers

A sample that contains aluminum is reacted with sulfuric acid according to the equation given below. When the aluminum dissolves

GrogVix [38]

Answer:

$m_{H_2}=0.0574gH_2$

Explanation:

Hello,

In this case, the information about the pressure, volume and temperature are enough to compute the mass of hydrogen assuming its ideal behavior:

$n_{H_2}=\frac{PV}{RT}=\frac{739mmHg*\frac{1atm}{760mmHg}*0.722 L}{0.082 \frac{atm*L}{mol*K}*298.15K} =0.0287molH_2$

The mass is:

$m_{H_2}=0.0287molH_2*\frac{2gH_2}{1molH_2} \\m_{H_2}=0.0574gH_2$

Best regards.

5 0

3 years ago

Anything in red is the question

solmaris [256]

Answer:

19. C₂H₂, HF, and H₂O₂ are molecular compounds

20. The formula is CuSO₄. 5H₂O

Explanation:

Question 19.

The three the chemical formulae in red, C₂H₂, HF, and H₂O₂, represent compounds because a compound is the chemical union of two or more atoms of different kind.

The chemical union is done either by ionic bonds or covalent bonds.

C, H, F, and O are all non-metal elements. Non-metals combine each other through covalent bonds, which is the bond in which electrons are shared to complete the valence shell. Ionic bonds are formed by the electrostatic atraction between ions of different charge and is typical of the bond between a metal and a non-metal.

Thus, all the bonds are covalent and the compounds are molecular compounds.

Question 20.

You can determine the chemical formula using the molar masses of both Copper(II) sulfate and water.

Molar mass of copper(II) sulfate: 159.609 g/mol
Molar mass of water: 18.015 g/mol

Call n the number of water molecules in the molecular formula:

CuSO₄ . nH₂O

The ratio of water to copper(II) sulfate is:

n × molar mass of water / molar mass of the compound

n × 18.015 / (n × 18.015 + 159.609) = 36%

18.015n = 0.36(18.015n + 159.609)

18.015n = 6.4854n + 57.45924

11.5296n = 57.45924

n = 4.9836 ≈ 5

Therefore, the formula of the hydrate contains 5 molecules of water and it is CuSO₄.5H₂O.

8 0

3 years ago