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Molecular Weight of KOH (Potassium hydroxide) is 56.
So, 1 mole of KOH is 56 grams.
25 grams of Potassium hydroxide is = 0.4464 of a mole.
250 cm^3 = 0.25 dm^3.
The concentration of the solution in is, THEREFORE,
= 1.786 . ANSWER
It is my answer.
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I am not a chemist in my basic education, although learned Chemistry diligently in my high school.
Working on this assignment, I consulted with Wikipedia and other Internet sources regarding properties
of KOH at normal temperature, including solubility.
I also have many years experience working with civil and mechanical engineers, where skills and a common sense
in operating with dimensions are MUST.
I started doing this assignment, because calculations by @josgarithmetic seem to be absurdist to me
and irrelevant to the posed question.
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After seeing my post, @josgarithmetic did what he does every time: re-wrote the numbers from my post.
So, it was not for nothing, when I worked on my solution . . .