С --- Mg2С --- СO2 --- СаСO3 --- Са(НСO3) --- СO2

Question

С --- Mg2С --- СO2 --- СаСO3 --- Са(НСO3) --- СO2

Answer 1

1 4Mg + C2 → 2Mg2C

2 Mg2C + 2O2 → 2MgO + CO2

3 2Ca + 3CO2 → 2CaCO3

4 CaCO3+ CO2+H2O---> Ca(HCO3)2

5 Ca(HCO3)2----> CaCO3+CO2+H2O (над стрелкой: t)