Ответ:
Объяснение:
Mr(Na2O) = 23*2 +16 = 62
W(Na) = Ar(Na) *n / Mr(Na2O) *100% = 23*2 / 62 *100% =74%
W(O) = Ar(O) *n / Mr(Na2O) *100% = 16*1 / 62 *100% = 26%
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Ответ:
Объяснение:
Mr(Na2O) = 23*2 +16 = 62
W(Na) = Ar(Na) *n / Mr(Na2O) *100% = 23*2 / 62 *100% =74%
W(O) = Ar(O) *n / Mr(Na2O) *100% = 16*1 / 62 *100% = 26%