Răspuns :
Răspuns:
MAl=27Kg/kmol
MAl2O3=2×27+3×16=102kg/kmol
2×102kg..........4×27kg
2Al2O3 => 4 Al + 3O2
81,6kg...............xkg
x=81,6×4×27/2×102=calculează
Răspuns:
MAl=27Kg/kmol
MAl2O3=2×27+3×16=102kg/kmol
2×102kg..........4×27kg
2Al2O3 => 4Al+3O2
81,6kg...............x kg
x=81,6×4×[tex]\frac{27}{2}[/tex]×102=449452,8