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sergey [27]
4 years ago
6

What is earths 3 main layers?

Chemistry
2 answers:
EastWind [94]4 years ago
8 0
Crust
Core
Mantle
Core is outer
mestny [16]4 years ago
6 0
That would be the crust (outer layer), mantle (semi-molten inner layer) and finally the core (the solid iron core of our planet). hope i helped :)
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Help please-
anzhelika [568]

Answer:

Oxygen and Carbon are in the non-metal section. Both are in 2nd period while Carbon is in group 4A and Oxygen is in group 6A.

Oxygen has more valence electrons than carbon. I wish I could give you a more accurate explanation why on paper, but all you need to do is count the electrons on the largest shell.

Here's the orbital notation of Carbon: 1s^2 2s^2 2px^1 py^1

Carbon's largest shell is 2. Count the electrons on shell 2, and you get 4 valence electrons.

Orbital notation of Oxygen: 1s^2 2s^2 2px^2 py^1 pz^1

Oxygen's largest shell is 2. So, like with carbon, count the electrons on the largest shell. You get 6.

There is a way easier way of interpreting this where you do not even have to write the orbital notation. I wish I can explain, but just know the periods and the group numbers.

7 0
3 years ago
How do you balance this equation?
anyanavicka [17]

Answer:

HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O

The coefficients are: 1, 1, 1, 1, 1

Explanation:

_HC₂H₃O₂ + _NaHCO₃ —> _NaC₂H₃O₂ + _CO₂ + _H₂O

To balance an equation, we simply do a head count of the individual elements and ensure they are balanced on both side.

For the above equation, we shall balance it as :

HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O

Reactant:

H = 5

C = 3

O = 5

Na = 1

Product:

H = 5

C = 3

O = 5

Na = 1

From the above, we can see that each element is the same on both side of the equation. Thus the equation is already balanced

HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O

The coefficients are: 1, 1, 1, 1, 1

5 0
3 years ago
Which was not part of Bohr's atomic model?
IrinaK [193]
I think the answer is A but I’m not completely sure
7 0
4 years ago
Read 2 more answers
Is precipitate in water an electrolyte solution
vagabundo [1.1K]
When no ions are produced, or the ion content is low, the solute is a non-electrolyte. Non-electrolytes do not conduct electricity or conduct it to a very small degree. In an aqueous solution a strong electrolyte is considered to be completely ionized, or dissociated, in water, meaning it is soluble
4 0
3 years ago
Which of these is the BEST way to manage a natural resource?
Solnce55 [7]

The answer is C.

This can be concluded by looking at the other answers and eliminating them one-by-one.

Managing (Or conserving) a natural resource means to sustain it and use it as efficiently as possible.

With this in mind, we can look and eliminate certain answers.

A is incorrect because driving a car uses gas, a natural resource. By using as much gas as possible, the resource would be wasted instead of conserved.

B is incorrect because water is a natural resource. Once again, by using this, it's wasted where it could be conserved.

C is correct because planting trees would conserve the resource; by consistently planting trees where they're cut, the chances of running out of wood decrease.

D is incorrect because both the water and the creatures that live inside it are natural resources. By dumping toxic waste, these resources are wasted where it could be conserved.

Hope this helped you! :)

6 0
3 years ago
Read 2 more answers
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