Why can evaporation be used to separate a mixture? Check all that apply.

Chemistry

2 answers:

gogolik [260]3 years ago

6 0

A C F is the answer, just did the test :D good luck

vlada-n [284]3 years ago

3 0

F because this is good for separating a liquid from a solution. For example, water can be separated from salty water by simple distillation. This method works because the water evaporates from the solution, but is then cooled and condensed into a separate container. The salt does not evaporate and so it stays behind.

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What is colloidal solutions

Igoryamba

Explanation:

Colloidal solutions, or colloidal suspensions, are nothing but a mixture in which the substances are regularly suspended in a fluid. ... Colloidal systems can occur in any of the three key states of matter gas, liquid or solid. However, a colloidal solution usually refers to a liquid concoction.

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3 years ago

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Which neutral atom is isoelectronic with N-3?

Airida [17]

Answer:

The trick here is to realize that the nitride anion, N3− , is isoelectronic with neon, Ne , the noble gas that shares a period with nitrogen, N . In other words, the nitride anion has the same number of electrons as neon.J

Explanation:

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2 years ago

What dose volume mean (in science)

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4 years ago

What change will be caused by addition of a small amount of hcl to a solution containing fluoride ions and hydrogen fluoride?

agasfer [191]

Answer:

The addition of a small amount of HCl to a solution containing fluoride ions and hydrogen fluoride will cause the equilibrium shift to the production of more hydrogen fluoride.

Explanation:

The solution containing fluoride ions and hydrogen fluoride (a weak acid) may be chemically represented by this equilibrium equation:

F⁻ (aq) + H⁺ (aq) ⇄ HF (aq)

The HCl, a strong acid, added will ionize in water according to this chemical equation:

HCl (aq) → H⁺ (aq) + Cl⁻ (aq)

Then, following Le Chatelir's principle, the addtion of H⁺ ions coming from the HCl dissociation, will increase the concentration of H⁺ in the solution, driving to the consumption of some F⁻ ions, and the production of more HF acid. This is a shift of the equilbrium toward the HF side.

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3 years ago

PLEASE HELP THOSE WHO ARE CHEMISTS!! How many molecules are there in 79g of Fe2O3? How many atoms is this?

Shtirlitz [24]

1. Fe2O3 or Iron (III) oxide is an organic compound. It contains 3 main oxides of Iron, the iron (II) oxide (FeO) and the iron (II, III) oxide (Fe3O4).

Now, let’s find the number of Molecules are there in 79g of Fe203:
The number of Atoms are there:

Molar Mass of Fe2O3 = 160g / mol.
=> 160g of Fe2O3 = 6.02 x 1023 Molecules
=> 79g of Fe2O3 = x
Next, find the value of X, in where:
x = (6.02 x 1023 x 79g) / 160g is approximately
x = 2.97 x 1023 molecules.

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3 years ago