Question #6f783

1 Answer
anor277
Sep 4, 2017

We adds 450*mL of fresh solvent........

Explanation:

We use the old relationship that defines concentration.....

"Concentration"="Moles of solute"/"Volume of solution", else.....

C=n/V

And thus since moles of solute are A CONSTANT........

Solving for n, C_1V_1=C_2V_2...and we solve for V_2....

V_2=(C_1V_1)/C_2=(300*mLxx0.5*mol*L^-1)/(0.2*mol*L^-1)=??*mL

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