Answer:
[tex]V_{concentrated}=0.042L=4.2mL[/tex]
Explanation:
Hello,
In this case, since in a dilution process the moles of the solute must remain unchanged, we use the volumes and molarities as shown below:
[tex]M_{diluted}V_{diluted}=M_{concentrated}V_{concentrated}[/tex]
Clearly, the concentrated solution is 12M and the diluted solution is 0.5 M, thus, the volume of the concentrated solution we should take is:
[tex]V_{concentrated}=\frac{M_{diluted}V_{diluted}}{M_{concentrated}} =\frac{0.5M*1.0L}{12M}\\ \\V_{concentrated}=0.042L=4.2mL[/tex]
Best regards.
