Ответ:
Объяснение:
Mr(Cl2O7) = 35,5*2 + 16*7 = 183
W(O) = Ar(O) *n / Mr(Cl2O7) *100% = 16*7 / 183 *100% =61%
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Ответ:
Объяснение:
Mr(Cl2O7) = 35,5*2 + 16*7 = 183
W(O) = Ar(O) *n / Mr(Cl2O7) *100% = 16*7 / 183 *100% =61%