Răspuns :
ms- masa solutie
md- masa dizolvat
m apa - masa apa
c- concentratie
ms = md + m apa
ms = 50 g + 200 g
ms = 250 gr
c = md/ms * 100
c= 50 g * 100 / 250
c= 20%
md- masa dizolvat
m apa - masa apa
c- concentratie
ms = md + m apa
ms = 50 g + 200 g
ms = 250 gr
c = md/ms * 100
c= 50 g * 100 / 250
c= 20%