Ответ:
Объяснение:
Mr(Al2O3) =27*2 + 16*3 =102
W(Al) = Ar(Al) *n / Mr(Al2O3) *100% = 27*2 / 102 *100% =53%
W(O) = Ar(O) * n / Mr(Al2O3) *100% = 16*3 / 102 *100% =47%
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Ответ:
Объяснение:
Mr(Al2O3) =27*2 + 16*3 =102
W(Al) = Ar(Al) *n / Mr(Al2O3) *100% = 27*2 / 102 *100% =53%
W(O) = Ar(O) * n / Mr(Al2O3) *100% = 16*3 / 102 *100% =47%