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Kipish [7]
3 years ago
13

The octet rule states that the formula for a compound is derived by Group of answer choices having a net charge of magnitude 8.

using a minimum of 8 atoms. using exactly 8 bonds in the formula unit. having all atoms or ions get noble gas electron configurations.
Chemistry
1 answer:
balandron [24]3 years ago
6 0

Answer:

Atoms bonds with 8 electrons

Explanation:

Octet rule is a chemical rule that shows elements in main group bond so that each atom have 8 valence electrons in the outmost shell which make them to have similar electronic configuration with Noble gases This is important because the sharing of electrons make atoms to have full shell. Atoms with electrons not up to 8 react with more stable compound.

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A scientist prepared an aqueous solution of a 0.45 M weak acid. The pH of the solution was 2.72. What is the percentage ionizati
aleksandr82 [10.1K]

Answer:

0.42%

Explanation:

<em>∵ pH = - log[H⁺].</em>

2.72 = - log[H⁺]

∴ [H⁺] = 1.905 x 10⁻³.

<em>∵ [H⁺] = √Ka.C</em>

∴ [H⁺]² = Ka.C

∴ ka = [H⁺]²/C = (1.905 x 10⁻³)²/(0.45) = 8.068 x 10⁻⁶.

<em>∵ Ka = α²C.</em>

Where, α is the degree of dissociation.

<em>∴ α = √(Ka/C) </em>= √(8.065 x 10⁻⁶/0.45) = <em>4.234 x 10⁻³.</em>

<em>∴ percentage ionization of the acid = α x 100</em> = (4.233 x 10⁻³)(100) = <em>0.4233% ≅ 0.42%.</em>

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3 years ago
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zaharov [31]

Answer: Option (D) is the correct answer.

Explanation:

Inorganic compounds are the compounds which lack carbon atoms.

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On the other hand, molecules, compounds, living, non-living, ionic, and covalent categories of chemicals can either have carbon content or not have carbon content.

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