July 2022 1 9 Report
Решить цепочку уравнений:
1) C=CO2=CO=CO2=Ca(HCO3)2=CaCO3=CaCl2=CaCO3=CO2
2) P=P2O5=H3PO4=BaHPO4=Ba(H2PO4)2=Ba3(PO4)2=H3PO4
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