\[\begin{aligned} c_1V_1 &= c_2V_2 \\ V_2 &= \frac {c_1V_1}{c_2} = \frac {10\% \cdot 15\mathrm{ml}}{3,0\%} = 50\mathrm{ml}\end{aligned}\]
F51
\[\begin{aligned} c_1V_1 &= c_2V_2 \\ V_2 &= \frac {c_1V_1}{c_2} = \frac {10\% \cdot 15\mathrm{ml}}{3,0\%} = 50\mathrm{ml}\end{aligned}\]