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GalinKa [24]
3 years ago
5

At melting point, a substance exists as

Chemistry
1 answer:
Nadya [2.5K]3 years ago
5 0
For a substance to melt it has to be a solid
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Atoms form chemical bonds to satisfy the rule and to become .
soldi70 [24.7K]

Answer: Atoms form chemical bonds to satisfy the<u> Octet</u> rule and to become <u>stable.</u>

Explanation:

The tendency of atoms to attempt to get a noble gas configuration that is eight valence electrons is said to be octet rule.  This is done to attain noble gas configuration and stability.

In order to attain stability the atoms tends to have eight electrons in its valence shell which can be obtained by either by sharing of electrons or complete transfer of electrons.

For example : As we know that the sodium has one valence electron, so if giving it up then the result in the same electron configuration as the neon and chlorine has seven valence electrons, so if it takes one it will have eight and the result in the same electronic configuration as the argon which is stable.

4 0
4 years ago
What statements are always true about limiting reactants?
alisha [4.7K]

Answer:

5.The limiting reactant is completely used up in the reaction

Explanation:

The limiting reactant is completely used up in the reaction is the correct answer because a limiting reactant is a reactant in chemical reaction that is completely consumed or used up in the chemical reaction. Limiting reactant when it is completely used up limits the amount of products that will be formed. The reaction will be halted or will stop when the limiting reactant is totally used up.

7 0
3 years ago
Would you expect trna or mrna to be more extensively hydrogen bonded? Why?
AveGali [126]

Answer:

tRNA

Explanation:

Messenger RNA is formed by a single chain of nucleotides, in contrasting to DNA, that has a double helix connoting several hydrogen bonds between chains.  In this case mRNA doesn't compete with DNA hydrogen bonds, because it appears in a single chain.

In the case of tRNA, their secondary structure present domains with abundant hydrogen bonds forming hairpins, loops, bulges and so.  In this way more interactions en the same molecule (tRNA) exist in different of their parts.

4 0
4 years ago
The anion O3− does not obey the octet rule. Draw its Lewis structure and state the type of octet-rule exception. Indicate the va
Tju [1.3M]

One of the oxygen atoms in the anion O3− is hypervalent and the formal charge on this oxygen atom is -1.

Ozone is a triatomic molecule. The anion formed from ozone is called the ozonide anion. This anion is also triatomic. The resonance structures of the ozonide anion are shown in the image attached to this answer.

We can see that one of the oxygen atoms in the ozonide ion is hypervalent because it contains ten instead of eight electrons. This hypervalent oxygen atom has a formal charge of -1 while the two other oxygen atoms has a formal charge of zero.

Learn more: brainly.com/question/8646601

3 0
3 years ago
Is pepperoni pizza an element ?
trasher [3.6K]
No because pepperoni pizza is an object.
6 0
4 years ago
Read 2 more answers
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