\(n_{CO_2\left(1\right)}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\\ n_{CO_2\left(2\right)}=\dfrac{4,704}{22,4}=0,21\left(mol\right)\\ n_{CO_2\left(tăng\right)}=0,21-0,2=0,01\left(mol\right)\\ m_{CaCO_3\left(giảm\right)}=4m-3m=m\left(g\right)\\ n_{CaCO_3}=\dfrac{m}{100}\left(mol\right)\)
Ta có: \(n_{CO_2\left(tăng\right)}=n_{CaCO_3\left(giảm\right)}\)
\(\rightarrow0,01=\dfrac{m}{100}\rightarrow m=100.0,01=1\left(g\right)\)
PTHH: Ca(OH)2 + CO2 ---> CaCO3
0,04 <--------------------- 0,04
\(\rightarrow m_{Ca\left(OH\right)_2}=0,04.74=2,96\left(g\right)\)