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lys-0071 [83]
3 years ago
15

3. What is the electron configuration of the following elements?

Chemistry
1 answer:
ki77a [65]3 years ago
5 0

Answer: Lithium ( 3),Calcium (20),Copper (29),Strontium (38),Potassium (19),Sodium (11)

Explanation:

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3 years ago
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Which elements in the periodic table are metalloids or have semimetallic properties
Marysya12 [62]
Hi There! :)

<span>Which elements in the periodic table are metalloids or have semimetallic properties?

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8 0
4 years ago
Describe how oxides of nitrogen are produced when petrol is burned in car engines !!HELP!!
KIM [24]

Answer:

Answer is on the pic

Explanation:

I hope it's helpful!

8 0
3 years ago
Calculate the standard potential, e°, for this reaction from its equilibrium constant at 298 k. 6.47 x 10^5
Elina [12.6K]
The working equation for this is written below:

E° = 0.0592logK/n

So, we have to know the value of n first which represents the number of moles electron in the reaction. We cannot answer this because we are not given with the reaction. However, just suppose the reaction is:

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Then, n=2. Continuing,

E° = 0.0592log(6.47×10⁵)/2 =<em> 0.172 V</em>
4 0
3 years ago
When warmed in dilute sulfuric acid, 1-phenyl-1,2-propanediol undergoes dehydration and rearrangement to give 2-phenylpropanal.
juin [17]

The mechanism is as suggested

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2) removal of water molecule to give carbocation

3) hydride shift to give more stable carbocation [rearrangement]

4) the stability of carbocation due to resonance

5) removal of proton and formation 1-phenyl-1-propanone.

This is Pinacole pinacolone rearrangement

Thus the reaction can be depicted as

3 0
3 years ago
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