Question

Question #6f783

Answer 1

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`