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Alik [6]
3 years ago
7

What is an example of natural material for fabric?

Chemistry
1 answer:
Sergio039 [100]3 years ago
4 0
Maybe cotton if that is what u are asking?
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Consider the Lewis structure for the polyatomic oxyanion shown here, where X is an element from the third period (Na−Ar). By cha
katovenus [111]

Hey there!

A ) PO₄³⁻

The element exhibits resonance (4 times) as there is a double bondwith 1 oxygen and a single with the other 3 oxygen. This switchesin each resonance structure. (I know its weird b/c  I leaves Phosphorus with 10 electrons surrounding it)



b) SO₄²⁻


Sulfur is the central atom  ,double bond 2 oxygens so that they can only have 4 valence electrons ( the little dots around the oxygen )  ,single bond 2 oxygens ( So that they have 6 valence electrons )



Formal charges are 0 for the two double bonded oxygens [ 6-6 = 0 ]and 0 for the sulfur [ 6-6=0 ]


But the oxygens are -1 [ 6-7 = -1 ]


Since there are two of them, there is a negative charge of -2



Bracket the whole structure and on the top right of the outside ofthe brackets write 2- and include a - (negative sign) next to eachof the single bonded oxygens



Don't forget there are resonance structures. The double bonds canbe placed around any of the oxygens



Hope that helps!

4 0
3 years ago
Plz help! Describe how to separate a mixture of sugar and water.
Gnom [1K]
I hope this helps!!

6 0
4 years ago
Why is the expectation value of the energy associated with the 1-D "particle-in-a-box" the same as the eigen value of the Hamilt
Veronika [31]

Answer: The average potential energy of the PIB is 0 irrespective of the wave function.

Explanation:

⟨H⟩=⟨KE⟩+⟨V⟩

the nn quantum number

⟨KE⟩=(π^2 ℏ^2)/(2mL^2 )

the average kinetic energy of the wavefunction is dependent on

⟨V⟩=∫sin(kx)0sin(kx)dx=0

The average potential energy of the PIB is 0 irrespective of the wave function.

⟨H⟩=⟨KE⟩=(π^2 ℏ^2)/(2mL^2 )

4 0
3 years ago
Dilution of a buffer solution with a small amount of water will ________ the ph of the solution.
Daniel [21]

The Dilution of a buffer solution with a small amount of water will raise the PH of the solution. Dilution is the process of "reducing the concentration of a solute in a solution by simply adding more solvent to the solution, such as water." Dilution involves increasing the amount of solvent in a solution without increasing the amount of solute.

When a solvent is added, the concentration of the solute in the solution is diluted. By removing the solvent, concentration raises the solute concentration in the solution. Dilution is the process of lowering a given solute's concentration in its solution.

To learn more about Dilution, click here.

brainly.com/question/22597773

#SPJ4

4 0
2 years ago
For the endothermic reaction below, when does le chatelier's principle predict that there will be an increase in the number of m
jeka94
When there is a decrease in the pressure or an increase in volume. As the container gets bigger, it will want to increase the pressure to get back to equilibrium. For that to happen, it will have to increase the number of gas moles, and since co2 is the only has in that equation, it will increase. 
8 0
4 years ago
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