• រៀនសារឡើងវិញ
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  • ចូរសរសេរសមីការទង្វើកំបោររស់ និងកំបោរងាប់។
    CaCO3= CaO+CO2 , CaO+H2O=Ca(OH)2
  • CuCO3+ HCl=....................................................
    CuCO3 + CO2 + H2O
  • Na2CO3+HCl=
    NaCl+CO2+ H2O
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