Answer:
[tex]250\text{ mL}[/tex]Explanation:
Here, we want to know the volume of water to be added
Mathematically:
[tex]C_1V_1\text{ = C}_2V_2[/tex]Where:
C1 is the percentage concentration initially which is 10%
V1 is the initial volume which is 0.1 L (this is the same as 100 mL since 1000 mL = 1L)
C2 is the percentage concentration of the final solution which is 4%
V2 is the added volume that we want to calculate
Substituting the values, we have it that:
[tex]\begin{gathered} 10\text{ }\times\text{ 100 mL = 4}\times V_2 \\ V_2\text{ = }\frac{10\times100}{4}\text{ = 250 mL} \end{gathered}[/tex]