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Vadim26 [7]
2 years ago
7

Need Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
2 answers:
Eduardwww [97]2 years ago
7 0
What do you need help with?!
Brilliant_brown [7]2 years ago
6 0

Answer:

what do you need

Explanation:

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1. For a mixture of pure hexane and pure dimethylformamide, the dimethylformamide layer will be found as:______.a. the top layer
castortr0y [4]

Answer:

1.  the bottom layer

2. aqueous HCI

3.  the top layer

4.aqueous NaOH

5. mostly in the diethyl ether layer

Explanation:

Pure dimethylformamide is considerably more polar than hexane hence thee two solutions will form two phases with the pure dimethylformamide as the bottom layer.

If we want to extract aniline from chloroform, HCl must be added in order to give a salt that can be extracted into the aqueous layer.

For a mixture of methylene chloride and diethyl ether, the diethyl ether layer will be found as the top layer since it is considerably less polar than  methylene chloride.

Benzyl alcohol can be extracted from a solution of chloroform by adding NaOH and extracting it into an aqueous layer.

A large partition coefficient for the extraction of naphthalene into diethyl ether from water means that naphthalene will be found mostly in the diethyl ether layer.

3 0
2 years ago
Star_____ has the greatest absolute brightness ​
Nitella [24]

Answer:

Star A would have the greater absolute brightness. This is because absolute brightness finds out the actual brightness of a star at a standard distance from Earth. If Star A is twice as far from Earth as Star B but they still both appear to have the same amount of brightness.

6 0
2 years ago
Materials move across a cell membrane in a process called _______.
maxonik [38]

Answer:

Diffusion

Explanation:

5 0
2 years ago
Read 2 more answers
Is it good to use alcl on the icy roads?
Zina [86]
Well you would think yeah because it’s a liquid but the answer is no
4 0
3 years ago
What causes atoms to form covalent bonds?
tino4ka555 [31]

Sharing of valence electrons.

Explanation:

In a covalent bonds, there is sharing of the valence electrons used in bonding between the two combining species.

The atoms taking part do not have a wide electronegativity difference between them and so they share the valence electrons to complete their octet and ensure their stability.

  • For the formation of this bond type, each of the atom requires a odd or unpaired electrons.
  • Covalent bonds are formed between atoms having zero or very small electronegativity difference.

Learn more:

Covalent bonds brainly.com/question/10903097

#learnwithBrainly

6 0
2 years ago
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