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Airida [17]
3 years ago
11

If an atom has 3 energy levels, how many sublevels should it have

Chemistry
2 answers:
AlekseyPX3 years ago
8 0
If an atom has 3 energy levels it should have 3 sublevels
RSB [31]3 years ago
5 0
If an atom has 3 energy levels, it has three sublevels. these are S, P and D.


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at a particulat temperature, a smaple of pure water has a Kw of 7.7x10-14. what is the hydroxide concentration of this sample
ycow [4]

Answer: The hydroxide concentration of this sample is 3.85\times 10^{-7}

Explanation:

When an expression is formed by taking the product of concentration of ions raised to the power of their stoichiometric coefficients in the solution of a salt is known as ionic product.

The ionic product for water is written as:

K_w=[H^+]\times [OH^-]

7.7\times 10^{-14}=[H^+]\times [OH^-]

As [H^+]=[OH^-]

2[OH^-]=7.7\times 10^{-14}

[OH^-]=3.85\times 10^{-7}

Thus hydroxide concentration of this sample is 3.85\times 10^{-7}

4 0
3 years ago
Which of the following energy quantities is equivalent to 578 J?
svlad2 [7]

Answer:

  • <em>0.138 kcal</em>

Explanation:

The answer choices are:

  • a) 5.78 × 10⁵ kJ
  • b) 138 kcal
  • c)0.138 kcal
  • d)1.38 × 10⁵ kcal

<h2>Solution</h2>

You must use the conversion factors to convert J to kcal.

  • 1cal = 4.184J

        Dividing both sides by 4.184J:

        ⇒ 1 = 1cal/4.184J

  • 1kcal = 1,000cal

       Dividing both sides by 1,000 cal

        ⇒ 1 = 1kcal / 1,000 cal

Mutiply<em> 578J</em> by the conversion factors to find <em>kcal</em>:

       578J\times 1cal/4.184J\times 1kcal/1,000cal=0.138kcal

Notice how the units J and cal cancel to yield kcal at the end.

5 0
3 years ago
Which is an overall second-order reaction?<br> R=k[A]2 [b]2<br> R=k[A][B]<br> R=k<br> R=k[B]
masha68 [24]
R=K[A]2 [b]2 HOPE THIS HELPS
4 0
3 years ago
What kind of energy does an unlit match have?​
Harman [31]

Answer:

Potential Energy

Explanation:

Right now, the match is giving off no energy to it's environment.

<em>Light</em><em> </em><em>it</em><em>.</em>

Now it's giving off a few kinds:

  • Thermal energy (heat)
  • Light energy

The match has the potential to have energy, but it currently has none.

3 0
3 years ago
What best describes the bonding in a carbon dioxide molecule?
Grace [21]
A is the answer just did it
5 0
3 years ago
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