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mash [69]
3 years ago
10

How many vance electrons does neon need to be stable

Chemistry
1 answer:
Aneli [31]3 years ago
8 0
An element is stable when it has a full outershell.
Generally, most shells after the first can hold 8 electrons.
The first shell can only hold 2

So in order for neon to be stable it must have a full outer shell
The first shell can hold 2
Neon has 10 electrons
10-2=8
The second shell can hold 8
And neon has 8 electrons left

So it must have 8 valence electrons to be stable
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Chemical equilibrium between gaseous reactants and products is shown.
Vinvika [58]

Answer:

The reaction is shifted to the left.

Explanation:

  • Le Châtelier's principle states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.
  • When there is a decrease in pressure, the equilibrium will shift towards the side with more no. of moles of gas molecules of the reaction.
  • The reactants side (left) has 4.0 moles of gases and the products side (right) has 2.0 moles of gases.
  • So, decreasing the pressure will shift the reaction to the side with more moles of gas (left side).
  • <em>so, the reaction is shifted to the left.</em>

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4 0
3 years ago
Read 2 more answers
The density of air under ordinary conditions at 25 degrees * C is 1.19g / L . How many kilograms of air are in a room that measu
professor190 [17]

Answer:

33.3 kg of air

Explanation:

This is a problem of conversion unit.

Density is mass / volume

Therefore we have to calculate the volume in the room, to be multiply by density. That answer will be the mass of air.

Volume of the room → 9 ft . 11 ft . 10 ft = 990 ft³

Density is in g/L, therefore we have to convert the ft³ to dm³ (1 dm³ = 1L)

990 ft³ . 28.3 dm³ / 1ft³ = 28017 dm³ → 28017 L

This is the volume of the room, if we replace it in the density formula we can know the mass of air in g.

1.19 g/L = Mass of air / 28017 L

Mass of air = 28017 L .  1.19 g/L → 33340 g of air

Finally, let's convert the mass in g to kg → 33340 g . 1kg / 1000 g = 33.3 kg

5 0
3 years ago
What are the properties of PLA plastic PLEASE HELP
Zanzabum

Answer:

The Heat Deflection Temperature (HDT) 126 °F (52 °C)

Density 1.24 g/cm³

Tensile Strength 50 MPa

Flexural Strength 80 MPa

Explanation:.

7 0
2 years ago
What is mg is it length, area, volume, mass, density, time or tenperature
Akimi4 [234]
Mg stands for Milligram
8 0
2 years ago
Someone please answer i’ll give you brainly.
lina2011 [118]
Let's hope she didn't watch it without me or i will never be speaking to her again :))
4 0
2 years ago
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