Question

Cuantos mililitros de alchol se requieren para preparar 200 ml de solucion al 10%

Answer 1

% v/v = v soluto  x  100
             ``````````
               v solc.

calcular  v (mL) de soluto

v soluto = 200 mL  x  10 mL/mL
                 `````````````````````````````
                          100

v soluto = 20 mL de alcohol