Question

Se descompun 2 kg carbonat de calciu (CaCO3) . Cate kg de oxid de calciu (CaO) se obtin si cate kg de dioxid de carbon (CO2 ) ??

Answer 1

          2kg          x          y                                       MCaCO3=40+12+3.16=100
          CaCO3 =CaO + CO2                                   MCaO=40 +16=56
           100kg      56 kg     44kg                              MCO2=12+2.16=12+32=44

x=2.56:100=1,12 CaO

Y=2.44:100=0,88 kg CO2