Question

Se amesteca 10 grame saramura de concentratie 2 la suta cu 20 grame saramura de concentratie 4 la suta . Calculeaza masa de sare din solutia finala . Ce concentratie va avea solutia obtinuta dupa amestecare

Answer 1

C1=2%



ms1=10g
C2=4%
ms2=20g




C1=md1/ms1*100=>md1=2*10/100=0.2g 

C2=md2/ms2*100=>md2=4*10/100=0.4g



mdf = md1+md2=0.6g




msf = ms1+ms2=30g





Cf=mdf/msf*100=0.6/30*100=