Question

ce compoziţie % are pirita şi calcopirita?

Answer 1

pirita = FeS2

miu(FeS2) = 120 g/mol

%Fe = 56x100/120 = 46,67%

%S = 100-46,67 = 53,33%

calcopirita = CuFeS2

miu(CuFeS2) = 184 g/mol

%Cu = 64x100/184 = 34,78%

%Fe = 56x100/184 = 30,44%

%S = 64x100/184 = 34,78%