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qaws [65]
2 years ago
15

How many valence electrons does Oxygen have: a) 3 b) 5 c) 13

Chemistry
2 answers:
Klio2033 [76]2 years ago
8 0

The answer should be 6

ivolga24 [154]2 years ago
4 0

Answer:

it has 6?

Explanation:

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Answer: A (1)

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What provides support and transportation of materials for a plant​
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The radius of a circle is 7.31. How should the circle area be reported?
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I'm not sure but it should be 7.31 times 2 times 3.14 or pi

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3 years ago
A student wants to prepare 1.00 L of a 1.00 M solution of NaOH (molar mass 40.00 g/mol). If solid NaOH is available, how would t
Serga [27]

Explanation:

1)

Molarity=\frac{\text{Mass of substance}}{\text{Molar mass of substance}\times \text{Volume of solution(L)}}

Mass of NaOH = m

MOlar mass of NaOH = 40 g/mol

Volume of NaOH solution = 1.00 L

Molarity of the solution= 1.00 M

1.00 M=\frac{m}{40 g/mol\times 1.00 L}

m=1.00 M\times 40 g/mol\times 1.00 L = 40. g

A student can prepare the solution by dissolving the 40. grams of NaOH in is small volume of water and making that whole volume of solution to volume of 1 L.

Upto two significant figures mass should be determined.

2)

M_1V_1=M_2V_2 (dilution equation)

Molarity of the NaOH solution = M_1=2.00 M

Volume of the solution = V_1=?

Molarity of the NaOH solution after dilution = M_2=1.00 M

Volume of NaOH solution after dilution= V_2=1 L

M_1V_1=M_2V_2

V_1=\frac{1.00 M\times 1.00 L}{2.00 M}=0.500 L

A student can prepare NaOH solution of 1.00 M by diluting the 0.500 L of 2.00 M solution of NaOH with water to 1.00 L volume.

Upto three significant figures volume should be determined.

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3 years ago
How many oxygen atoms are present in the compound aluminum sulfate?
yawa3891 [41]
I believe that there are 12 oxygen atoms in aluminum sulfate, And 1 Sulfur and 2 aluminum. If you need anything else let me know.
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3 years ago
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