We are being asked to determine the volume of 12.0 M HCl is needed to make a 75 mL of 3.50 M solution.

When dealing with **dilution **we will use the following equation:

$\overline{){{\mathbf{M}}}_{{\mathbf{1}}}{{\mathbf{V}}}_{{\mathbf{1}}}{\mathbf{=}}{{\mathbf{M}}}_{{\mathbf{2}}}{{\mathbf{V}}}_{{\mathbf{2}}}}$

M_{1} = initial concentration

V_{1} = initial volume

M_{2} = final concentration

V_{2} = final volume

**Calculate the ****initial volume of the HCl solution.**

What volume of 12.0 M HCl is required to make 75.0 ml of 3.50 M HCl?

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