Theo gt ta có:
[tex]m_{CaCO_3/davoi}=280-280.\frac{25}{100}=210(kg)[/tex]
[tex]\Rightarrow m_{CaCO_3/tgpu}=210.\frac{80}{100}=168(kg)[/tex]
PTHH:
[tex]CaCO_3\overset{t^o}{\rightarrow}CaO+CO_2[/tex] (*)
Theo (*) ta có: 100kg.......56kg.....44kg
Theo gt ta có: 168kg......94,08kg......73,92kg
[tex]\Rightarrow m_{CaO}=94,08(kg)[/tex]