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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?

Respuesta :

10n31y

1) list givens and convert if necessary

C₁ = 3.50 mol/L

V₁ = 0.550 L

C₂ = ?

V₂ = 0.275 L

2) rearrange formula

[tex]C_{1}V_{1}=C_{2}V_{2}\\\\C_{2}=\frac{C_{1}V_{1}}{V_{2}}[/tex]

3) solve

[tex]C_{2}=\frac{(3.50\ mol/L)(0.550\ L)}{(0.275\ L)}[/tex]

C₂ = 7.00 mol/L

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