Question

Cuántos gramos de Ca(OH)² se necesitan para preparar 300g de una solución al 15%

Answer 1

%m/m = m soluto  x  100             ``````````````                m solc.
m soluto = 15 g/g  x  300 g                 ```````````````````````                         100
m soluto = 45 g Ca(OH)2