3 years ago

What is the number of electrons in the outermost energy level of an oxygen atom?

Chemistry

1 answer:

Alik [6]3 years ago

6 0

Answer:

6 electrons.

Explanation:

An atom of oxygen has six electrons in its outermost energy level, and these are called valence electrons.

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Which compound type is formed when two atoms share two electrons?

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Covalent compounds
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3 years ago

9.8 x 10^-6 regular notation

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Answer:

0.0000098 should be the answer

Explanation:

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3 years ago

Given the following chemical reaction:

True [87]

Answer:

Explanation:

one volume of nitrogen to react

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3 years ago

Write the balanced COMPLETE ionic equation for the reaction when aqueous NiCl₂ and aqueous Na₂S are mixed in solution to form so

Reptile [31]

Answer:

Explanation:

The chemical reaction of the well-balanced equation is as follows:

$\mathbf{2NiCl_{2(aq)}+2Na_2S_{(aq)} \to 4NaCl_{(aq)}+2NiS_{s}}$

The aforementioned reaction's ionic equation is:

$\mathbf{2Ni^{2+}_{(aq)}+4Cl^-_{(aq)}+ 4Na^+_{(aq)}+2S^{2-}_{(aq)} \to 4Na^+_{(aq)}+4Cl^-_{(aq)}+2NiS_{(s)}}$

From above; Na⁺ and Cl⁻ appear on both sides;

Hence, the net ionic equation is:

$\mathbf{2Ni^{2+}_{(aq)}+2S^{2-}_{(aq)} \to 2NiS_{(s)}}$

3 0

3 years ago

What volume of 12.0 M sulfuric acid is needed to prepare 300.0 mL of 2.50 M solution?

Zepler [3.9K]

Answer:

n=c*V

=2.50*300x10^-3

=.75 moles of hcl

v=n/c

=.75/12

=.0625 L

convert to mL

=62.5mL

4 0

3 years ago