\(a.\)
\(n_{Fe}=\frac{11,2}{56}=0,2\left(mol\right)\) \(n_{H2SO4}=\frac{19,6}{98}=0,2\left(mol\right)\)\(b.\)
\(n_{SO2}=\frac{5,6}{22,4}=0,25\left(mol\right)\)\(\Rightarrow m_{SO2}=0,25\times64=16\left(gam\right)\)
\(n_{H2}=\frac{22,4}{22,4}=1\left(mol\right)\)\(\Rightarrow m_{H2}=1\times2=2\left(gam\right)\)
a) \(n_{Fe}=\frac{m}{M}=\frac{11,2}{56}=0,2\left(mol\right)\)
\(n_{H_2SO_4}=\frac{m}{M}=\frac{19,6}{98}=0,2\left(mol\right)\)
b) \(n_{SO_2}=\frac{V}{22,4}=\frac{5,6}{22,4}=0,25\left(mol\right)\)
\(\Rightarrow m_{SO_2}=M.n=64.0,25=16\left(g\right)\)
* \(n_{H_2}=\frac{V}{22,4}=\frac{22,4}{22,4}=1\left(mol\right)\)
\(\Rightarrow m_{H_{ }_2}=M.n=2.1=2\left(g\right)\)