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Nostrana [21]
2 years ago
13

How many electrons do silicon and oxygen atoms need to form octets?

Chemistry
1 answer:
Ray Of Light [21]2 years ago
3 0

Answer:

We convert two lone pairs of electrons from each oxygen atom to a covalent bond, as seen in the SiO2 Lewis dot structure. As a result, the valence shells of both silicon and oxygen have eight electrons.

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When 8.0 grams of sodium hydroxide is dissolved in sufficient water to make 400. mL of solution, what is the concentration of th
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Answer:

The concentration of this sodiumhydroxide solutions is 0.50 M

Explanation:

Step 1: Data given

Mass of sodium hydroxide (NaOh) = 8.0 grams

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Step 2: Calculate moles NaOH

Moles NaOH = mass NaOH / molar mass NaOH

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Moles NaOh = 0.20 moles

Step 3: Calculate concentration of the solution

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Concentration solution = 0.50 M

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