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ValentinkaMS [17]
2 years ago
7

How many electrons are in an ion of calcium (Ca2+)? A. 2 B. 18 C. 0 D. 22

Chemistry
1 answer:
Elanso [62]2 years ago
7 0
B 18 is the answer ......
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Why does a metal bond with a non-metal in ionic bondings?? ASAP please
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Calculate the pOH of an aqueous solution of .0.073 M LiOH
Novosadov [1.4K]

Considering the definition of pOH and strong base, the pOH of the aqueous solution is 1.14

The pOH (or potential OH) is a measure of the basicity or alkalinity of a solution and indicates the concentration of ion hydroxide (OH-).

pOH is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:

pOH= - log [OH⁻]

On the other hand, a strong base is that base that in an aqueous solution completely dissociates between the cation and OH-.

LiOH is a strong base, so the concentration of the hydroxide will be equal to the concentration of OH-. This is:

[LiOH]= [OH-]= 0.073 M

Replacing in the definition of pOH:

pOH= -log (0.073 M)

<u><em>pOH= 1.14 </em></u>

In summary, the pOH of the aqueous solution is 1.14

Learn more:

  • <u>brainly.com/question/16032912?referrer=searchResults </u>
  • <u>brainly.com/question/13557815?referrer=searchResults</u>
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