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FrozenT [24]
3 years ago
5

What factors should be taken into consideration when choosing the ideal solvent for the crystallization of a particular compound

?
Chemistry
1 answer:
never [62]3 years ago
3 0

Answer: the following are essential factors to be considered when choosing a solvent for crystallization

1. The crystallization solvent should not dissolve the substance to be purified at room temperature, but it should dissolve it well at the solvent’s boiling point

2. The solvent should dissolve soluble impurities well at room temperature.

3. The solvent should not dissolve insoluble impurities even at the solvent’s boiling point.

4. The solvent must not react with the substance to be purified .

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Identify each element below, and give the symbols of the other elements in its group:
Misha Larkins [42]

Answer:

Answer in explanation

Explanation:

a. Boron , element 5

Helium has 2 electrons, add to the other 3 to give 5.

Other group members are : Aluminum Al, Gallium Ga, Indium In , Thallium Tl and Nihonium Nh

b. Sulphur, element 16

Neon is 10 , add other 6 electrons to make 16

Other group members are: Oxygen O, selenium Se , Tellurium Te and Polonium Po

c. Lanthanum, element 57

Xenon is 54, add the other 3 electrons to give 57.

Other elements in group : Scandium Sc , Yttrium Y , Actinium Ac, Lutetium Lu and/or Lawrencium Lr

4 0
3 years ago
How many moles are in 2g of H2O<br>​
Studentka2010 [4]

Answer:

1/9 moles

Explanation:

No of moles = mass/molar mass

No of moles = 2g/18gmol-1

No of moles = 1/9 moles

7 0
3 years ago
A 160g radioactive sample is left undisturbed for 12.5 hours. At the end of that period, only 5.0g remain. What is the half-life
11Alexandr11 [23.1K]

it would be 26 because once you divide 160g by 5.0g and add 12.5 you would get 26

hope this helps

3 0
2 years ago
Read 2 more answers
A diatomic molecule with a triple covalent bond is
Debora [2.8K]
The diatomic molecule with a triple covalent bond is N2.
Nitrogen has five atoms in its valence shell. In order for it to attain the octet structure, that is, to have eight electrons in its outermost shell, it has to donate three electrons, just like the other element it is reacting with in order to form a triple covalent bond.
5 0
3 years ago
Read 2 more answers
How electron infinity depends upon nuclear force of attraction​
almond37 [142]

Answer:

There are two factors that can affect electron affinity. These are atomic size and nuclear charge. ... The smaller the atom is, the closer the outermost shell is; therefore, it is a stronger attraction between the nucleus and the incoming electron. That means the electron affinity is higher for smaller atoms.

Explanation:

mark me as the brainliest

7 0
2 years ago
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