Осуществить превращения. c-co-co2-nahco3-na2co3-caco3
sladkaiakailinn
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23.06.2019 17:10
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2CO+O2=2CO2
NaOH+CO2=NaHCO3
NaHCO3+NaOH=Na2CO3+H2O
Na2CO3+CaCl2=2NaCl+CaCO3