Cat % reprezinta Fe din
CuFeS 2
Fe3O4 ?????


Răspuns :

M CuFeS2= 184
184g CuFeS2......56g Fe
100.....................p1
p1=30,84%
M Fe3S2 = 232
232g Fe3S2.........112gFe
100.......................p2
p2=48,27%Fe