Al2O3
W(Al) = Ar(Al) *n / Mr(Al2O3) * 100% = 27 * 2 / 102 *100% =52,94 %
W(O) = Ar(O) * n / Mr(Al2O3) *100% = 16 *3 / 102 *100% = 47,05%
Mr(Al2O3) = 27*2 + 16*3 = 102
Al2O3
W(Al) = Ar(Al) *n / Mr(Al2O3) * 100% = 27 * 2 / 102 *100% =52,94 %
W(O) = Ar(O) * n / Mr(Al2O3) *100% = 16 *3 / 102 *100% = 47,05%
Mr(Al2O3) = 27*2 + 16*3 = 102