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Artist 52 [7]
2 years ago
9

What is the use of the crystallisation process?

Chemistry
2 answers:
ioda2 years ago
5 0
  •  to obtain pure salt from seawater. 
  • in order to obtain pure crystals of a substance from an impure mixture. 
  • obtain pure alum crystals from an impure alum.

joja [24]2 years ago
4 0

<em><u>to</u></em><em><u> </u></em><em><u>separate</u></em><em><u> </u></em><em><u>pure</u></em><em><u> </u></em><em><u>salt</u></em><em><u> </u></em><em><u>from</u></em><em><u> </u></em><em><u>salt</u></em><em><u> </u></em><em><u>water</u></em>

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When Aluminum oxide is heated with iron no reaction takes place?
Keith_Richards [23]

Answer:

Explanation:

That's correct. Once Aluminum becomes an ion, it is very hard to force it to take back its electrons. Only a few elements can do it. Iron is not one of them.

7 0
2 years ago
Plz help! NO FAKE ANSWERS PLEASE
aleksklad [387]

Answer:

postion emmsion

Alpha decaya

gamma decay

beta decay

in order

Explanation:

and there is 100% of humans dieing becasue of atoms decays which is sad and also answers the question does life have meeain and no we are all going to die anyways

7 0
2 years ago
Read 2 more answers
All that are marked in blue
Igoryamba
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8 0
3 years ago
Chlorine is a halogen and has 7 valence electrons, which is represented by crosses on the left
makkiz [27]

There are 2 electrons in the overlapping region.

Chlorine is the second member of the halogen group which are form of family of elements that resemble one another very closely.

The electronic configuration of chlorine shows the arrangement of chlorine electrons within it's atom.

At the outer most shell of the atom is seven electrons, therefore requires only one electron each to attain the octet arrangement.

The overlapping of the orbitals indicates the chemical bond formed by sharing of electrons between atoms called covalent bonding.

To complete it's outer most shell, it will need to share electron with another chlorine atom.

Therefore, there are 2 electrons in the overlapping region.

Learn more here:

brainly.com/question/16396974

3 0
2 years ago
How many moles of Cu do you need to react with 12 moles of O2?<br> 2Cu(s) + O2(g) 2CuO(s)
zzz [600]

Answer:

24 mol Cu

General Formulas and Concepts:

<u>Chemistry</u>

  • Stoichiometry

Explanation:

<u>Step 1: Define</u>

RxN: 2Cu (s) + O₂ (g) → 2CuO (s)

Given: 12 moles O₂

<u>Step 2: Stoichiometry</u>

<u />12 \ mol \ O_2(\frac{2 \ mol \ Cu}{1 \ mol \ O_2} ) = 24 mol Cu

<u>Step 3: Check</u>

<em>We are given 2 sig figs.</em>

Our final answer is in 2 sig figs, so no need to round.

3 0
2 years ago
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