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OlgaM077 [116]
3 years ago
9

The element oxygen has _____ valence electrons. (Input only a whole number, such as 7.) Numerical Answers Expected! Answer for B

lank 1:
Chemistry
2 answers:
densk [106]3 years ago
8 0

Answer:

7 valence electron

Explanation:

Plz give me brainiest

navik [9.2K]3 years ago
4 0

Answer:

7 valence electrons.

Explanation:

Oxygen lies in period 2 and group 16 of the periodic table. It is eighth element on the periodic table. Its symbol is O.

Its electronic configuration is given by:

16 = 2,8,6

It has 6 valance electrons. Its valancy is -2. It means can share share and it can gain 2 electron to get stability.

Hence, The element oxygen has <u>7</u> valence electrons.

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False.
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3 years ago
You have a volumetric flask containing 0.54 M HBr. The SOLUTE is HBr and the SOLVENT is water.
soldi70 [24.7K]

Answer:

false

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2 years ago
How many nitrogen atoms are in 2.79 mo.of NH3
alexandr1967 [171]
1 mol of any particles has 6.02 * 10 ²³ particles.

If we look at 1 NH3 (1 mol NH3 or 1 molecule NH3), we can see that 1 molecule NH3 has 1 atom of N and 3 atoms of H; also 1 mole of NH3 has 1 mole of N atoms and 3 moles of H atoms.

So, 1 mol of NH3 has 1 mol of N atoms,
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2.79 mol of N atoms* 6.02 * 10 ²³ N atoms/ 1 mol N atoms = 1.68*10²⁴ N-atoms 

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3 years ago
The difference between paper chromatography and thin layer chromatography is that
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5 0
3 years ago
I WILL MARK BRAINLIEST ANSWER!
Zina [86]

Answer:

1.

Explanation:

1. They are made up of two or more Pure substances that are not chemically bonded together and appear non-uniform

A heterogeneous mixture is not chemically combined and its components are visible and can be seen.

5 0
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