Ответ:
Объяснение:
Mr(Al2O3) = 27*2 + 16*3 = 102
W(O) = Ar(O) *n / Mr(Al2O3) *100% = 16*3 / 102 *100% =47%
Mr(K2O) = 39*2 + 16 = 94
W(O) = Ar(O) *n / Mr(K2O) *100% = 16*1 / 94 *100% = 17%
Mr(ZnO) = 65 + 16 =81
W(O) = Ar(O) *n / Mr(ZnO) *100% = 16*1 / 81 *100% =20%
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Ответ:
Объяснение:
Mr(Al2O3) = 27*2 + 16*3 = 102
W(O) = Ar(O) *n / Mr(Al2O3) *100% = 16*3 / 102 *100% =47%
Mr(K2O) = 39*2 + 16 = 94
W(O) = Ar(O) *n / Mr(K2O) *100% = 16*1 / 94 *100% = 17%
Mr(ZnO) = 65 + 16 =81
W(O) = Ar(O) *n / Mr(ZnO) *100% = 16*1 / 81 *100% =20%