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Rzqust [24]
3 years ago
7

Question 3 (10 points) How many valence electrons are in a neutral atom of Neon-212

Chemistry
1 answer:
Rus_ich [418]3 years ago
8 0
Since neon has 8 valence electrons, a full octet makes neon stable. It is also a noble gas. Then, you do the configuration...

1s2 2s2 2p6

2s holds 2 valence electrons while 2p has 6 that equals a full octet.
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Write the name and formula of the compound made of magnesium and fluorine
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Answer:

Name : Magnesium Fluoride

Formula : MgF2

Explanation:

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3 years ago
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3 years ago
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3.8 liters of sulfur vapor, S8(g), at 921.4°C and 5.87 atm is burned in excess pure oxygen gas to give sulfur dioxide gas measur
lilavasa [31]

Answer:

116.5 g of SO₂ are formed

Explanation:

The reaction is:

S₈(g) +  8O₂(g)  → 8SO₂ (g)

Let's identify the moles of sulfur vapor, by the Ideal Gases Law

We convert the 921.4°C to Absolute T° → 921.4°C + 273 = 1194.4 K

5.87 atm . 3.8L = n . 0.082 L.atm/mol.K . 1194.4K

(5.87 atm . 3.8L) / (0.082 L.atm/mol.K . 1194.4K) = n → 0.228 moles of S₈

Ratio is 1:8, 1 mol of sulfur vapor can produce 8 moles of dioxide

Then, 0.228 moles of S₈ must produce (0.228 . 8) /1 =  1.82 moles

We convert the moles to g → 1.82 moles . 64.06 g /1mol = 116.5 g

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3 years ago
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Which factor affects a solute's solubility rather than its rate of solution?
Illusion [34]

Answer: A

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Which of the following is a feature of a Type IV flotation device?
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A Type IV PFD is an approved device designed to be thrown to a person in the water. It is not designed to be worn. It is designed to have at least 16.5 pounds of buoyancy. The most com- mon Type IV PFD is a buoyant cushion.

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2 years ago
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