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docker41 [41]
2 years ago
13

Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.

Chemistry
1 answer:
Harman [31]2 years ago
5 0

Can you please add a picture of the case??

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3 years ago
¿Cuántos electrones conforman un enlace doble?
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3 years ago
The process of passing electricity through water to chemically separate it into hydrogen and oxygen is called what?
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<span>electrolysis of water.
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3 years ago
Read 2 more answers
Phenol red is an indicator that changes color over a range from ph=6.4 to ph=8.0. what is ka of phenol red?
patriot [66]
First, we will get the average pH of the two given values:
average pH = (6.4+8) / (2) = 7.2
At this average pH, the concentration of the acid from the phenol red is equal to the concentration of the base.
pH = 7.2
[H+] = 10^(-7.2) = 6.3 * 10^-8

Phenol red has the general formula HA, this gives us:
HA <.......> H+ + A- 
At pH = 7.2, [H+] = [A-]
<span>Ka = [H+][A-]/ [HA]
</span>Ka = [H+] = <span>6.3 x 10^-8</span>

7 0
3 years ago
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