July 2022 1 9 Report

Осуществите цепочку превращений.

А) CaCO3 - CaO - CaC2 - C2H2
Б) Si - SiO2 - Na2SiO3 - H2SiO

В) Ca - Ca(OH)2 - CaCO3 - CaO - CaSO4 - CaCl2 - Ca

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