To find the number of moles, use the formula:
\[
\text{Moles} = \text{Concentration (M)} \times \text{Volume (L)}
\]
Given that the concentration of NaOH is 0.250 M and the volume is 50.0 mL (which is 0.0500 L), we can calculate:
\[
\text{Moles of NaOH} =
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