Bài 4 :
Bảo toàn khối lượng :
\(m_{CO_2}=50-29=21\left(tấn\right)\)
\(n_{CO_2}=\dfrac{21\cdot10^3}{44}\left(kmol\right)\)
\(\Rightarrow n_{CaCO_3}=\dfrac{21\cdot10^3}{44}\left(kmol\right)\)
\(m_{CaCO_3\left(pư\right)}=\dfrac{21\cdot10^3}{44}\cdot100=\dfrac{525}{11}\left(tấn\right)\)
\(H\%=\dfrac{\dfrac{525}{11}}{50}\cdot100\%=95.45\%\)
5.2
\(M_X=16\cdot4=64\left(\dfrac{g}{mol}\right)\)
Bài 5.1 :
\(M_A=\dfrac{44x+44y}{x+y}=44\left(\dfrac{g}{mol}\right)\)
\(M_B=\dfrac{28a+28b}{a+b}=28\left(\dfrac{g}{mol}\right)\)
\(d_{A\text{/}B}=\dfrac{44}{28}=\dfrac{11}{7}\)