\(1a,n_{CaCO_3}=4mol\)
\(H=65\%\Rightarrow n_{CaCO_3pứ}=4,65\%=2,6mol\)
\(PTHH:CaCO_3\rightarrow CaO+CO_2\)
\(----2,6----2,6---2,6\)
\(m_A=2,6.56+400.35\%=285,6g\)
\(b,\%CaO=\frac{2,6.56}{285,6}.100\%=50,98\%\)
Vậy ......................................
1)
a)
nCaCO3= 4 mol
H= 65%⇒ nCaCO3 pư= 4.65%=2,6 mol
PTHH:
CaCO3→ CaO+ CO2
2,6 2,6 2,6
mA= 2,6.56+ 400.35%=285,6 g
b)
%CaO= 2,6.56/ 285,6.100%=50,98%
Nguồn :https://hoidap247.com/cau-hoi/205102