Answer:
4.54 % NaOH
Explanation:
[tex]\text{Mass percent} = \dfrac{\text{Mass of component}}{\text{Total mass}} \times 100 \, \%[/tex]
Data:
Mass of NaOH = 11.6 g
Mass of water = 38.4 g
Mass of solution = 250.0 g
Calculation:
[tex]\text{Mass \% NaOH} = \dfrac{\text{11.6 g NaOH}}{\text{250 g solution}} \times 100 \% = \textbf{4.54 \% NaOH}[/tex]