Question

here is your question
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Answer 1

Answer:

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Answer 2

SOLUTION

Number of moles o NaOH(n)

$= > \frac{weight}{molar \: mass \: of \: NaOH} \\ \\ = > \frac{4}{40} \\ \\ = > 0.1 \: mole$

Therefore,

Molarity of NaOH = n/v

=) 0.1/0.250 (250ml= 0.250l)

=)0.4 M

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