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aniked [119]
3 years ago
15

How valence electrons does oxygen have.

Chemistry
2 answers:
lions [1.4K]3 years ago
8 0

Answer:

six valence electrons.

Explanation:

Valence electrons are the electrons in the outermost shell, or energy level, of an atom.

Kaylis [27]3 years ago
3 0

Answer:

six

Explanation:

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Calculate the number of grams contained in each of the following number of moles. Report your answer with the appropriate number
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<u>Answers:</u>

a. 131.85 grams

b. 134.69 grams

To calculate the number of grams in the number of moles given for each compound, consider the formula:

<em>Moles = No. of grams / molar mass</em>

Therefore, to find the gram it will become:

<em>No. of grams = moles x molar mass</em>

a.  0.410 mol of NaCl (sodium chloride)

Molar mass of NaCl = (286.14 + 35.45) = 321.59

No. of grams = moles x molar mass

No. of grams = 0.410 x 321.59 = 131.85 grams

b. 4.80 mol of C2H4 (ethylene)

Molar mass of C2H4 = (12.01 x 2) + (1.01 x 4) = 28.06

No. of grams = moles x molar mass

No. of grams = 4.80 x 28.06 = 134.69 grams

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3 years ago
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How many electrons must Aluminum lose or gain to obtain a noble gas<br> electron configuration? *
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