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erastovalidia [21]
3 years ago
11

Which part of an atoms nuclear symbol shows the number of protons in an atom of that element?

Chemistry
1 answer:
Blizzard [7]3 years ago
3 0

Answer: Lower Left

Explanation:

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Which type of chemical bond involves the sharing of valence electrons between two atoms?
mr_godi [17]
Covalent bond is the type of bond which involves the sharing of valence electrons between two atoms. 
This bond usually arises from the equal attraction of the nuclei of the two atoms for the electrons shared.

Ionic bond, on the other hand, arises due to the transfer of electrons from the valence shell of one atom to the valence shell of the other.
7 0
3 years ago
A chemical change occurs when
trasher [3.6K]

Answer:

Chemical changes occur when bonds are broken and/or formed between molecules or atoms. This means that one substance with a certain set of properties (such as melting point, color, taste, etc) is turned into a different substance with different properties

Explanation:

6 0
3 years ago
What are 4 ways you can improve your skeletal system health?
NARA [144]

Answer:

1. get vitamin c

2. get your bone mineral density tested

3. don't smoke or drink excessively

4. start weight-bearing exercise

Explanation:

helps improve skeletal system

7 0
3 years ago
Name a possible product of this reaction in the presence of ether and AlCl3: methylbenzene + 1-chlorodecane.a. 1-methyl-2-decylb
Vikki [24]

Answer:

None of these

Explanation:

Friedel–Craft reaction is a reaction involves the attachment of substituents to the benzene ring.

Mechanism of the reaction of methylbenzene with 1-chlorodecane in the presence of ether and aluminum chloride :

Step -1 : Generation of stable carbocation.

Aluminium chloride acts as Lewis acid which removes the chloride ion from the alkyl halide forming carbocation. The primary carbocation thus formed gets rearranged to secondary primary carbocation which is more stable due to hyperconjugation.

Step-2: Attack of the ring to the carbocation

The pi electrons of the ring behave as a nucleophile and attacks the carbocation. Since, the group attached on the benzene is methyl (+R effect) , the attack is from the ortho and the para positions. Para product is more stable due to less steric hinderance.

The product formed is shown in mechanism does not mention in any of the options.

So, None of these is the answer

8 0
4 years ago
Read 2 more answers
Which equation is balanced?
Paha777 [63]

Answer:

it's the third one

Explanation:

in the first one oxygen molecules aren't balanced

the second ok me oxygen isnt balanced

and the fourth one hydrogen isn't balanced

hope it helps ;)

5 0
3 years ago
Read 2 more answers
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