Răspuns:
1) c=md/ms*100 => c=100/500*100=20%
2) md=100g
md2=100+50=150g
ms2=500+50=550g
c2=md/ms*100 => 150/550*100=27,27%
3) mapa2=ms2-md2=550-150=400g
mapa3=400+100=500g
ms3=ms2+100=550+100=650g
c3=md2/ms3*100 => 150/650*100=23,07%
Concluzie:
Cu cat adaugam mai multa cantitate de dizolvat(solvat), concentratia va creste. Cu cat adaugam mai multa apa, concentratia va scade.