Ответ: 47,83 % ∛≈ 48%
Ar(Mn) = 55
Mr(MnCO3) = 115
W(Mn) = (55 : 115) × 100% = 47,83 %
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Ответ: 47,83 % ∛≈ 48%
Ar(Mn) = 55
Mr(MnCO3) = 115
W(Mn) = (55 : 115) × 100% = 47,83 %