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DENIUS [597]
3 years ago
13

Which of the following describes a homogeneous mixture? (2 points) Question 18 options: 1) It can be separated by chemical means

but not by physical means. 2) It cannot be separated by either chemical or physical means. 3) It can be separated by physical means and is uniform in composition. 4) It can be separated by physical means and is not uniform in composition.
Chemistry
2 answers:
Svetllana [295]3 years ago
7 0

It can be separated by physical means and is not uniform in composition.

Ghella [55]3 years ago
5 0

Answer: Option (3) is the correct answer.

Explanation:

A mixture that consists of two or more substances mixed in uniform composition then it is known as a homogeneous mixture.

For example, NaCl dissolved in water is a homogeneous mixture.

There will be equal composition of NaCl and water. Therefore, we can obtain NaCl crystals from this solution by evaporating the water.

Hence, we can conclude that the statement it can be separated by physical means and is uniform in composition, describes a homogeneous mixture.

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Dmitry_Shevchenko [17]
The reaction between concentrated acid and water can release a lot of heat. If a little water is added to a larger amount of acid, the heat can cause the small amount of water to boil very rapidly which then spatters some acid. ... It is recommended that acid should be added to water and not water to acid.
8 0
3 years ago
Consider the following intermediate chemical equations. When you form the final chemical equation, what should you do with CO? C
-Dominant- [34]

Answer:

Cancel out CO because it appears as a reactant in one intermediate reaction and a product in the other intermediate reaction.

Explanation:

The CO appears twice hence in he intermediate reaction it only forms path of the enabling reagents and it further reacts to form the final product. Accounting for the CO in the intermediate reaction that undergoes further reaction will impact on the stoichiometry of the reaction.

5 0
3 years ago
Compare the life cycles of a flowering and a conifer non-flowering plant.
damaskus [11]

Answer:

The main difference between flowering and nonflowering plants is their method of reproduction. Flowering plants rely on pollination for reproduction, where as nonflowering plants rely on dispersion to continue their life cycle.

3 0
3 years ago
Below are 5 sets of potential solutes for you to compare. Both members of each pair are very soluble in water. If you had equal
Gelneren [198K]

Answer:

Option D. AlCl₃, MgC₂

Explanation:

We need to dissociate all the salts, to determine the i. (Van't Hoff factor).

The salt who has the highest value, will be the better conductor of electricity

CsCl  → Cs⁺  +  Cl⁻   i = 2

CaCl → Ca²⁺ +  Cl⁻   i = 2

CaS → Ca²⁺ +  S⁻²    i = 2

Li₂S → 2Li⁺  +  S⁻²    i = 3

KBr →  K⁺  +  Br⁻       i = 2

AlCl₃ →  Al³⁺ + 3Cl⁻   i = 4

MgC₂  →  Mg²⁺  +  2C⁻   i = 3

KI  →  K⁺  +  I⁻     i = 2

K₂S  →  2K⁺  + S⁻²   i = 3

The biggest i, is in pair D.

6 0
3 years ago
The best way seperate salt fron wateris with the use of
ExtremeBDS [4]

You can boil or evaporate the water and the salt will be left behind as a solid. If you want to collect the water, you can use distillation. This works because salt has a much higher boiling point than water. One way to separate salt and water at home is to boil the salt water in a pot with a lid. So, I would say maybe oil.

6 0
3 years ago
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