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Molodets [167]
3 years ago
12

Balance this equation by using the correct coefficient ​

Chemistry
1 answer:
mars1129 [50]3 years ago
6 0

Answer:

4 Al +3 02-------> 2 AL2O3

Explanation:

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Select the correct answer.
ivann1987 [24]

Answer:

C.

Explanation:

The electronic configuration of N (7 electrons): 1s² 2s² 2p³.

The orbital 1s is filled with two electrons and their spinning direction is opposite and also electrons of 2s.

3p contains (3 electrons) should fill the 3 orbitals firstly. Every orbital contains 1 electron and be in the same spin direction.

So, the right choice is c.

A is wrong because 2 electrons of 3p are paired in the first orbital before filling every orbital.

B is wrong because the 2 electrons of 1s and 2s are in the same direction and also 2 electrons of 3p are paired in the first orbital before filling every orbital.

D is also wrong the 2 electrons of 1s and 2s are in the same direction and the electron in the second orbital of 3p are in opposite direction of the other 2 electrons.

7 0
3 years ago
The period of daylight experienced each day on every part of Earth would be shorter if which one of the following changes occurr
lilavasa [31]

Answer:

c

Explanation:

5 0
2 years ago
Read the scientific question below.
svetlana [45]
If we fertilize a plant, then its height increases fast. Always use if then format
8 0
3 years ago
21. Draw Lewis structure
Veseljchak [2.6K]

Answer:

C contains one N and three I atoms

7 0
2 years ago
How do cells use lipids and carbohydrates?
Nata [24]

Answer:

Animals tend to use carbohydrates primarily for short-term energy storage, while lipids are used more for long-term energy storage. Carbohydrates are stored as glycogen in animals while lipids are stored as fats (in plants carbohydrates are stored as cellulose and lipids as oils)

Explanation:

hope this helps!

8 0
3 years ago
Read 2 more answers
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