Răspuns :
1200 g sol ...........50 g sare
1500 g sol................x
x = 1500 * 50 : 1200
x = 62,5 g sare
1500 g sol................x
x = 1500 * 50 : 1200
x = 62,5 g sare
m s = 1200 g
m d=50 g
c =m d×100/ms
c= 50×100/1200
c= 4,1℅
4,1=md ×100/1,5
md=0,06 g
m d=50 g
c =m d×100/ms
c= 50×100/1200
c= 4,1℅
4,1=md ×100/1,5
md=0,06 g