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Dimas [21]
2 years ago
13

Draw the electron configuration for a neutral atom of nitrogen.

Chemistry
1 answer:
velikii [3]2 years ago
6 0

Answer:

1s22s22p3.

Explanation:

Electronic configuration of a neutral atom is 1s22s22p3.  

Please see the image attached

 

Neutral atom of nitrogen will have equal number of proton and electron i.e equal to 7. 7 electron of the nitrogen are placed into the s and p orbitals in the ground state.  

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To what volume (in mL) would you need to dilute 20.0 mL of a 1.40 M solution of LiCN to make a 0.0880 M solution of LiCN?
CaHeK987 [17]

Answer:

To 318.18 mL would you need to dilute 20.0 mL of a 1.40 M solution of LiCN to make a 0.0880 M solution of LiCN

Explanation:

Dilution is the reduction of the concentration of a chemical in a solution and consists simply of adding more solvent.

In a dilution the amount of solute does not vary. But as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

In a solution it is fulfilled:

Ci* Vi = Cf* Vf

where:

  • Ci: initial concentration
  • Vi: initial volume
  • Cf: final concentration
  • Vf: final volume

In this case:

  • Ci= 1.40 M
  • Vi= 20 mL
  • Cf= 0.088 M
  • Vf= ?

Replacing:

1.40 M* 20 mL= 0.088 M* Vf

Solving:

Vf=\frac{1.40 M* 20 mL}{0.088 M}

Vf= 318.18 mL

<u><em>To 318.18 mL would you need to dilute 20.0 mL of a 1.40 M solution of LiCN to make a 0.0880 M solution of LiCN</em></u>

<u><em></em></u>

7 0
3 years ago
A sample of air is slowly passed through aqueous Sodium hydroxide and then over heater copper.
faust18 [17]
A sample of air is slowly passed through aqueous Sodium hydroxide and then over heater copper <span>Carbon dioxide and oxygen.</span>
4 0
3 years ago
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What kind of ocean ecosystem did the author of this text ask questions about
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5 0
3 years ago
Help with this worksheet please (24pts)
Igoryamba
  • Atoms that loss or gain electrons are called ions. There are two types of ions: cations and anions.
  • Here, 2+ represents that Calcium (Ca) should gain 2 more electrons so that its number equals to that of protons.
  • 3- represents that Nitrogen (N) should loss 3 electrons to equivalent with the number of protons.
  • Here, anions are S^2-, P^3-, Se^2-, Br^-.
  • While cations are Cr^3+, Ag^+, Li^+, Ba^2+.
  • The number of protons of Magnesium (Mg) = 12
  • The number of nuetrons of Mg = 12
  • The number of electrons of Mg = 12

Hope you could get an idea from here.

Doubt clarification - use comment section.

7 0
2 years ago
Discuss whether glucose is a mixture of water and carbon dioxide or is it a new compound?
Aleksandr [31]

Answer:

SEE BELOW

Explanation:

Glucose (C6H12O6) is an organic compound composed of the elements carbon, hydrogen and oxygen.

8 0
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