Question

Ai 200g solutie , 10% se imparte in 100 probe egale la masa in care se introduc un balon de sticla.Afla:
a)masa probei;
b)masa de substanta dizolvata;
c) masa de solvent din fiecare proba;
d)concentratia; procentuala a fiecarei probe.

Answer 1

D)10% B)md= ms×c:100=200×10:100=20 C)ms=md+msolvent=>msolvent=ms-md=180g solvent A)200:100=2g