- Tính số mol các chất có trong hh X:
\(n_{CO_2}=\dfrac{V}{22,4}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\)
\(n_{SO_3}=\dfrac{1,8.10^{23}}{6.10^{23}}=0,3\left(mol\right)\)
- Tính khối lượng hh X:
\(m_X=\left(0,4+0,3\right).\left(44+80\right)=0,7.124=86,8\left(g\right)\)
\(n_{CO_2}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\)
\(n_{SO_3}=\dfrac{1,8\times10^{23}}{6\times10^{23}}=0,3\left(mol\right)\)
\(m_{CO_2}=0,4\times44=17,6\left(g\right)\)
\(m_{SO_3}=0,3\times80=24\left(g\right)\)
\(\Rightarrow m_X=m_{CO_2}+m_{SO_3}=17,6+24=41,6\left(g\right)\)
\(\Rightarrow\%m_{CO_2}=\dfrac{17,6}{41,6}\times100\%=42,31\%\)
\(\%m_{SO_3}=\dfrac{24}{41,6}\times100\%=57,69\%\)