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irina1246 [14]
3 years ago
5

A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example

Chemistry
2 answers:
11Alexandr11 [23.1K]3 years ago
4 0

Answer:

Homologous structure

Explanation:

Homologous structures come from same ancestors but have different functions.

tekilochka [14]3 years ago
4 0

Answer:

Use the drop-down menus to complete the sentences.

Tetra fish that live in caves are blind and have small eyes that do not work. This is an example of a  

✔ vestigial structure

.

A harbour seal’s flipper and a human hand have a very similar structure, but function differently. This is an example of a  

✔ homologous structure

.

Explanation:

this what is right on edge2020. Hope it helps

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Helpmeh on this question
jolli1 [7]

The answer would be B imo

C and E are wrong right off the bat.

6 0
3 years ago
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Which of the following sets of quantum numbers refers to a 4p orbital
Fofino [41]

Answer:

For the 4p orbital, n=4, which is just the energy level of the orbital. All p orbital has an l quantum number equal to 1, so for the 4p orbital, l=1.

Explanation:

4 0
2 years ago
What types of compounds do not dissolve in water?
Nataliya [291]
Oil doesn't dissolve in water, which could be your answer.
8 0
3 years ago
Atoms have a tendency to complete their outer energy level. This is known as _____.
Alina [70]

Answer : Option C) The Octet Rule

Explanation : Atoms have a tendency to complete their outer energy level. This is known as Octet Rule.

The octet rule is a chemical rule of thumb which reflects the observation, that atoms of main-group elements tends to combine in such a way that each atom gets eight electrons in its valence shell, which gives it the same electron configuration as that of a noble gas.

In short, the tendency of an atom to fill its valence shell and attain a stable state it acquires or donates the electron is called as octet rule.

5 0
3 years ago
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29. Ammonia is formed with one nitrogen and three hydrogen atoms. What is the electron configuration of nitrogen? How
masya89 [10]

Answer:

<u>One lone-Pair is present in Ammonia</u>

<u></u>

Explanation:

The number of valence electron in N = 5

The number of Valence electron in H = 1

The formula of ammonia = NH3

Total valence electron in ammonia molecule = 5 +3(1) = 5+3 = 8

The lewis structure suggest that :

Nitrogen completes its octet by sharing the electron pair with 3 hydrogen atoms.

3 electron of Nitrogen are involved in sharing with Hydrogen

So,<u><em> remaining two electron are left non-bonded</em></u> . Hence they exist as lone- pair

So, there is only 1 lone pair in the ammonia molecule .

The shape of NH3 is bent according to VSEPR theory . This is so because the presence of 1 lone pair causes more repulsion and occupy more space.

Thus the lone pair is changing the shape of the ammonia molecule . It also increase the dipole moment of the molecule , which gives polarity to it.

5 0
3 years ago
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