% v/v = v soluto x 100
`````````````````````
v solc.
x = v soluto = mL de acetona
v solc. = v soluto + v solvente
% v/v = x · 100
``````````````````
( x + 250 mL)
% v/v · ( x + 250 mL) = 100 · x
15 mL /mL ( x + 250 mL) = 100 · x
15 mL/mL · x + 3750 mL = 100 · x
AGRUPAR X
100 x - 15 mL/mL · x = 3750 mL
85 mL/mL · x = 3750 mL
X =3750 mL / 85 mL/mL
x = 44.12 mL de acetona
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% v/v = v soluto x 100
`````````````````````
v solc.
x = v soluto = mL de acetona
v solc. = v soluto + v solvente
% v/v = x · 100
``````````````````
( x + 250 mL)
% v/v · ( x + 250 mL) = 100 · x
15 mL /mL ( x + 250 mL) = 100 · x
15 mL/mL · x + 3750 mL = 100 · x
AGRUPAR X
100 x - 15 mL/mL · x = 3750 mL
85 mL/mL · x = 3750 mL
X =3750 mL / 85 mL/mL
x = 44.12 mL de acetona