CaCO3 ---------to------> CaO + CO2
100.................................56.........44 (g)
m<----------------------------280 (g)
=> m=\(\dfrac{280.100}{56}=500\left(g\right)\)
Vì H=80%
=> \(m=\dfrac{500}{80\%}=625\left(g\right)=0,625\left(kg\right)\)
\(n_{CaO}=\dfrac{280}{56}=5\left(mol\right)\)
PTHH: CaO + CO2 → CaCO3
Mol: 5 5
\(\Rightarrow m=m_{CaCO_3}=5.100.80\%=400\left(g\right)=0,4\left(kg\right)\)