Ответы
Пример:
-------------------------- ca=ce =caco3=cacl2=cao
=====================================================
Решение:
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1 2Сa+O2=2CaO =
--------------------------- =
2.CaO+CO2=CaCO3 =
-------------------------------------- =
3.CaCO3+2HCl=CaCl2+H2O+CO2 =
---------------------------------------------------- =
4.CaCl2+2NaOH=Ca(OH)2+2NaCl Ca(OH)2(t)=CaO+H2O =
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