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kramer
3 years ago
9

Which is not a characteristic of true solutions? 1. exists in only a single phase 2. homogeneous 3. passes through a filter 4. s

ettles out?
Chemistry
2 answers:
Lerok [7]3 years ago
7 0

Answer:

The correct answer is 4. settles out

Explanation:

A chemical solution is the homogeneous mixture of one or more substances dissolved in another substance in greater proportion. It is composed of solute and solvent, where the solute is the substance that dissolves and the solvent that dissolves it. In other words, the solvent is the species found in the highest proportion and the solute is the  species in a smaller proportion. Different solutions may occur in the solutions in which  solids, liquids or gases act as solutes or as solvents.

So, <u><em>the correct answer is 4. settles out, because  the solution resulting from the mixture of the two components will have a single recognizable phase (solid, liquid or gaseous) even though their components have different phases.</em></u>

katovenus [111]3 years ago
5 0
The answer is no.4 Settles out

- Because the solute particles in the true solution doesn't settle, and it can diffuse rapidly, pass through filter paper.

- But the solute particles in the colloidal solution can be made to settle by centrifugation.
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For each reaction, identify the element that gets reduced and the element that gets oxidized. 2 AgCl + Zn ⟶ 2 Ag + ZnCl 2 2AgCl+
Mnenie [13.5K]

Answer:

Explanation:

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Oxidizing agents:

Oxidizing agents oxidize the other elements and itself gets reduced.

Reducing agents:

Reducing agents reduced the other element are it self gets oxidized.

Consider the following reaction:

2AgCl + Zn  → 2Ag + ZnCl₂

In this reaction oxidation state of Zn on left side is 0 while on right side +2 so it gets oxidized and oxidation state of Ag on left side is +1 and on right side 0 so it get reduced.

4NH₃  +  3O₂   →   2N₂ +  6H₂O

In this reaction oxidation state of nitrogen on left side is -3 while on right side 0 so it gets oxidized and oxidation state of oxygen on left side is 0 and on right side -2 so it get reduced.

Fe₂O₃ +  2Al  →   Al₂O₃ +  2Fe

In this reaction oxidation state of iron on left side is +3 while on right side 0 so it gets reduced and oxidation state of Al on left side is 0 and on right side +3 so it get oxidized.

4 0
3 years ago
How many element are there on the periodic table?
givi [52]

Answer:118

Explanation: it’s right

5 0
2 years ago
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Osmotic pressure ____.a. occurs only in ionic solutions.b. is lower with 1 M NaCl than 1 M sucrose.c. is created using detergent
Firdavs [7]

Answer:

d. is the hydrostatic pressure produced on the surface of a semi-permeable membrane by osmosis.    

Explanation:

Osmosis -

It is the flow of the molecules of solvent from a region of higher concentration towards the region of lower concentration via a semipermeable membrane , is known as osmosis.

Osmotic pressure -

It refers to the minimum amount of pressure , which is required to be applied to the solution in order to avoid the flow of pure solvent via the semipermeable membrane , is referred to as osmotic pressure.

Or in simple terms ,

Osmotic pressure is the pressure applied to resists the process of osmosis.

Hence ,

From the given options in the question,

The correct option regarding osmotic pressure is d.

6 0
3 years ago
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Umnica [9.8K]

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Sea water is composed of salt, sand and water. Here, salt and water form homogeneous mixture but due to the presence of sand, the mixture is heterogeneous. Salt dissolves in water and the solution has uniform composition but sand does not dissolve in water, even after vigorous mixing, after some time it settles at the bottom resulting formation of layers. Thus, sea water containing salt, water and sand is a heterogeneous mixture.


4 0
3 years ago
Which substance can be broken down by chemical means?
sp2606 [1]
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7 0
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