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pantera1 [17]
3 years ago
12

What information on the periodic table is used to complete electron dot diagrams? The number before the A at the top of a column

shows how many dots to draw in the diagram. The number before the B at the top of a column shows how many dots to draw in the diagram. The number at the left of each row shows the number of valence electrons that are in atoms of elements in that row. The number at the left of each row shows how many dots to draw above the symbol for elements in that row.
Chemistry
2 answers:
zmey [24]3 years ago
8 0
The answer is <span>The number before the A at the top of a column shows how many dots to draw in the diagram.</span>
Ann [662]3 years ago
8 0
<h3><u>Answer;</u></h3>

The number before the A at the top of a column shows how many dots to draw in the diagram.

<h3><u>Explanation</u>;</h3>
  • Electron dot structures are structures in which electrons are represented by dots placed around a chemical symbol. Therefore, in a dot diagram only the symbol for the element and the electrons in its outermost energy level are shown.
  • The reason as to why valence electrons are the only ones used in dot diagram is because; they are the only ones involved in chemical reactions and bonding, to make it easier to decide what it could be bonded to and its characteristics. Also to make it easier identify its placement on periodic table.
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Carbon disulfide is prepared industrially by reacting carbon with sulfur dioxide according to the above equation. If 70.8 g of c
Rus_ich [418]

Answer:

1.18 moles of CS₂ are produced by the reaction.

Explanation:

We present the reaction:

5C + 2SO₂  →  CS₂  +  4CO

5 moles of carbon react to 2 moles of sulfur dioxide in order to produce 1 mol of carbon disulfide and 4 moles of carbon monoxide.

As we do not have data from the SO₂, we assume this as the excess reagent. We convert the mass of carbon to moles:

70.8 g / 12 g/mol = 5.9 moles

Ratio is 5:1, so 5 moles of carbon react to produce 1 mol of CS₂

Then, 5.9 moles will produce (5.9 . 1) / 5 = 1.18 moles

8 0
3 years ago
A sample of sugar (C12H22O11) contains
Oduvanchick [21]

Answer: 0.25 mol

Explanation:

Use the formula n=N/NA

n= number of mols

N =  number of particles

Nᵃ = Avogadros constant = 6.02 x

So, n=

The 10 to the power of 23 cancels out and you are left with 1.505/6.02, which is approximately 1/4. This is the same as 0.25 mol.

Hope this helped :)

5 0
3 years ago
A tall pea plant (Tt) is crossbred with another tall pea plant (Tt). The following Punnett square shows the separated alleles fo
Luba_88 [7]

Answer:

B.

Explanation:

when you use punnett squares, you cross the different genes with themselves. if T is in the first box on both sides, the genome will be TT. if the box lines up to tt, it will be tt. the boxes on the left use the genes' first letter and the boxes on the right use the second letter.

7 0
3 years ago
Read 2 more answers
Which of the following phase changes describes what is
stich3 [128]

Answer:

I think the answer is boiling

8 0
3 years ago
Select the correct answer.
Elina [12.6K]

Answer:

CU

Explanation:

Cu is the correct answer if I'm correct

4 0
2 years ago
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