W(Fe)=72,41%
FexOy
0,7241=56x(56x+16y)
0,7241*(56х+16у)=56х
41,5576x+11,8736y=56x
11,8736y=56x-41,5576x
11,8736y=14,4424
y=1,22x
2y=3x
x:y=2:3
Fe2O3
W(Fe)=72,41%
FexOy
0,7241=56x(56x+16y)
0,7241*(56х+16у)=56х
41,5576x+11,8736y=56x
11,8736y=56x-41,5576x
11,8736y=14,4424
y=1,22x
2y=3x
x:y=2:3
Fe2O3