Na2O
Mr(Na2O) = 23*2 + 16 = 62
Mr(NaNO3) = 23+14+16*3 = 85
Ответ: а)
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Na2O
Mr(Na2O) = 23*2 + 16 = 62
Mr(NaNO3) = 23+14+16*3 = 85
Ответ: а)