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drek231 [11]
3 years ago
15

Question is in the image

Chemistry
2 answers:
Bond [772]3 years ago
8 0

Answer:

C) 3

Explanation:

Al +  H2SO4 → Al2(SO4)3 + H2

2Al + H2SO4  → Al2(SO4)3 + H2

2Al + 3H2SO4 → Al2(SO4)3 + H2

2Al + 3H2SO4 → Al2(SO4)3 + 3H2

zloy xaker [14]3 years ago
6 0

Answer:(3)

Explanation: 2Al+3H2SO4----->Al(2SO4)3+3H2

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Why is the separation of mixtures into pure or relatively pure substances so important when performing a chemical analysis?
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Answer:

It is important to separate mixture into pure or relatively pure substances when performing a chemical analysis SO AS TO KNOW THE PROPERTIES COMING FROM EACH PART MIXTURE WHICH MAY INTERFERE WITH THE SEPARATION.

Explanation:

In chemistry, Mixture is the combination of two or more substances which are not combine chemically.

Mixture contain different substances with different physical and chemical properties.

It is important to purify the substances in a mixture so as to identify what properties are coming from each mixture and also some part of the mixture can interfere with the properties of other mixture present for skewing analysis.

3 0
3 years ago
Calculate the pOH of this solution. pH = 1.90 pOH =
ladessa [460]

Answer:

<h2>12.1 </h2>

Explanation:

Since the pH has been given, the pOH can be found by using the formula

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pOH = 14 - 1.9

We have the final answer as

<h3>12.1</h3>

Hope this helps you

8 0
2 years ago
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Reil [10]

Answer:

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Explanation:

Physical and chemical changes are similar because they are both caused by the interaction of two or more particles. Physical changes occur through vibrations, impacts, and other forms of movement. Chemical changes are caused by the interaction of two or more atoms or molecules.

7 0
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den301095 [7]
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8 0
3 years ago
What purpose do each of the following play in the isolation and purification of ethyl 3- hydroxybutanoate?
Shalnov [3]

Explanation:

-Filter help — delete some big unreacted, undesirable species (norit is probably from what you are sorting through, its only carbon which cleans up things)

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- Anhydrous sodium absorbs excess of  water (dries the material)

-evaporation in the hood to clear the DCM and crystallize the product.

8 0
3 years ago
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