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elixir [45]
3 years ago
14

What term refers to columns of elements?

Chemistry
1 answer:
Ira Lisetskai [31]3 years ago
8 0
The term is group
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Electroysis is used for ​
Alina [70]

Answer:

Electrolysis is used extensively in metallurgical processes, such as in extraction (electrowinning) or purification (electrorefining) of metals from ores or compounds and in deposition of metals from solution (electroplating).

Explanation:

hope it helps

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4 0
3 years ago
After 4 half-lives have elapsed, the amount of a radioactive sample which has not decayed is
ra1l [238]

The answer gonna be: 1/2^n = 1/2^4 = 0.0625

So, 6.25% sample has not decayed yet!!!

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3 years ago
Why are molecule atoms as far away from each other as possible
iVinArrow [24]

According to VSEPR theory, molecular geometry can be predicted by starting with the electron pair geometry about the central atom and adding atoms to some or all of the electron pairs.

7 0
3 years ago
The hydroxide ion concentration of a saturated solution of ca(oh)2 is m. what is the solubility product constant for ca(oh)2
dalvyx [7]
Solubility product constants are values to describe the saturation of ionic compounds with low solubility. A saturated solution is when there is a dynamic equilibrium between the solute dissolved, the dissociated ions, the undissolved and the compound. It is calculated from the product of the ion concentration in the solution. For the base, Ca(OH)2, the dissociation would  be as follows:<span>

Ca(OH)2 = Ca2+ + 2OH-

So, the expression for the solubility product constant would be as follows:

Ksp = [Ca2+] [OH-]^2

let x be the concentration of the Ca2+. So,

</span>
Ksp = [x] [2x]^2
<span>Ksp = 4x^3

You have to substitute the value of the concentration of the calcium hydroxide in the final expression which is not given in the problem statement in order to evaluate Ksp.
</span><span>
</span>
6 0
3 years ago
How can filtering produce clean water from dirty water?
Pavel [41]
Filtering would remove the dirt and some particles of dirt from the water, which would make it good to drink. 
5 0
3 years ago
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