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Nana76 [90]
4 years ago
7

Explain distillation and chromatography

Chemistry
1 answer:
lianna [129]4 years ago
6 0
<span>Distillation is the action of purifying a liquid by a process of heating and cooling.
</span>The definition<span> of </span>chromatography<span> is "a process of separating out different parts of </span>chemical<span> mixtures onto an absorbent material that can then be individually analyzed because different parts are caught on the material at different rates."</span>
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Use this chemical equation to answer the question.
Maurinko [17]

Answer:

D. 4, 3, 2.

Explanation:

Oxygen exists as the molecule O2. So it is:

4Fe +  302  --->  2Fe2O3

7 0
3 years ago
Read 2 more answers
Indicate whether each statement is true or false. Sort these statements into the proper categories.
tankabanditka [31]

Answer:

Answer below

Explanation:

A - false

B - true

C - false

In chemistry there is a principle that polar compounds are soluble with other polar compounds and non-polar compounds are mutually different.

Thus, sodium chloride is an ionic salt (polar) so it is not soluble in the benzene (non-polar) covalent compound, but it is soluble in water that is polar.

The ionic compounds will be soluble in polar solvents and not soluble in non-polar solvents, regardless of whether they are organic or inorganic.

3 0
3 years ago
how do i word a formal letter to a teacher saying i didn't pay attention during the science lessons and i now have no idea what
Allushta [10]

Explanation:

Hello mr/mrs (name) I unfortunately couldn't pay attention to the class due to some issues I had therefore I don't know what we are doing in class

OR

Hello mr/mrs (name) I could understand what we were doing in class I would like it if you could break it down more or explain better to me

OR just say something it had something to do with your internet such as

Hello mr/mrs (name) I didn't understand what you were saying during our class due to some of my internet issues I was have throughout the day. I hope you can explain what we did during the class.

Those may be some of my excuses I've used before

they have worked for me:)

I don't know if that helped?:/

8 0
3 years ago
write net ionic equations for the reaction, if any, that occurs when aqueous solutions of the following are mixed. a. ammonium s
sertanlavr [38]

Answer:

SO₄²⁻(aq) + Ba²⁺(aq) ⇒ BaSO₄(s)

Explanation:

Let's consider the molecular equation that occurs when aqueous solutions of ammonium sulfate and barium nitrate are mixed.

(NH₄)₂SO₄(aq) + Ba(NO₃)₂(aq) ⇒ BaSO₄(s) + 2 NH₄NO₃(aq)

The complete ionic equation includes all the ions and insoluble species.

2 NH₄⁺(aq) + SO₄²⁻(aq) + Ba²⁺(aq) + 2 NO₃⁻(aq) ⇒ BaSO₄(s) + 2 NH₄⁺(aq) + 2 NO₃⁻(aq)

The net ionic equation includes only the ions that participate in the reaction and the insoluble species.

SO₄²⁻(aq) + Ba²⁺(aq) ⇒ BaSO₄(s)

5 0
3 years ago
Unscramble the following words to form a complete sentence about the cycles of nature:
Luden [163]

Answer: idk I have that question too , sorry to get ur hopes up high thinking this was an answer.  PERIOTTTT

Explanation:

8 0
3 years ago
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