If 550 mL of a 3.50 M KCl solution are set aside and alowed to evaporate unti the volume of the solution is 275 ml, what will the molarity of the solution be?

1) list givens and convert if necessary

C₁ = 3.50 mol/L

V₁ = 0.550 L

C₂ = ?

V₂ = 0.275 L

2) rearrange formula

3) solve

C₂ = 7.00 mol/L

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