Ответ:
Объяснение:
Mr(Zn(NO3)2 = 65 + 14*2 + 16*6 = 189
W(O) = Ar(O) *n / Mr(Zn(NO3)2 *100% = 16*6 / 189 *100% = 51%
Mr(NaNO3) = 23 + 14 + 16*3 = 85
W(O) = Ar(O) *n / Mr(NaNO3) *100% = 16*3 / 85 *100% = 56%
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Ответ:
Объяснение:
Mr(Zn(NO3)2 = 65 + 14*2 + 16*6 = 189
W(O) = Ar(O) *n / Mr(Zn(NO3)2 *100% = 16*6 / 189 *100% = 51%
Mr(NaNO3) = 23 + 14 + 16*3 = 85
W(O) = Ar(O) *n / Mr(NaNO3) *100% = 16*3 / 85 *100% = 56%