October 2021 1 5 Report
Обери речовини, за допомогою яких можна здійснити перетворення:Zn(OH)2 → ZnSO4Ca(OH)2 → CaSiO3
1 бал
SO2
H2SO4
K2SO4
SO3
K2SO3
H2SiO3
SiO2
K2SiO3​
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