Ответ:
Mr[Zn(NO3)2] = Ar[N] * 2 + Ar[O] * 6 + Ar[Zn] = 14.0067 * 2 + 15.9994 * 6 + 65.409 = 189.4188 = 189
Объяснение:
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Ответ:
Mr[Zn(NO3)2] = Ar[N] * 2 + Ar[O] * 6 + Ar[Zn] = 14.0067 * 2 + 15.9994 * 6 + 65.409 = 189.4188 = 189
Объяснение: