Question

Cate grame de saramura de concentratie 20% si saramura 10% se amesteca pentru rezulta 500g saramura de concentratie 15%

Answer 1

NaCl -saramura
c1=20%
c2=10%
M=500 g NaCl
Cfinal=15%
c1=md/ms
20%=md/500
rezulta md=100g
c2=md/ms
10%=md/500
md=500g
Rezulta cf=500+100=600g
cfinal=md final/ ms final
15%=md final/600
Rezulta md=90 g( ii mai trebuie)