What volume (mL) of concentrated solution of magnesium chloride (9.00 M) must be diluted to 350. mL to make a 2.75 M solution of magnesium chloride?

Volume of 106.9 mL from the concentrated solution should be taken and diluted to 350 mL.

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We can use the formula.

c1v1 =c2v2

Where c1 is the concentration and v1 is volume of the concentrated solution.

c2 is the concentration

and v2 is the volume of the diluted solution to be prepared

9.00 M x V1 = 2.75 M x 350 mL

V1 = 106.9 mL

Volume of 106.9 mL from the concentrated solution should be taken and diluted to 350 mL.