\(n_{Zn}=\dfrac{6,5}{65}=0,1\left(mol\right)\\ PTHH:Zn+2HCl\rightarrow ZnCl_2+H_2\\ n_{HCl}=2.n_{Zn}=2.0,1=0,2\left(mol\right)\\a, \Rightarrow m_{HCl}=0,2.36,5=7,3\left(g\right)\\ b,n_{H_2}=_{ZnCl_2}=n_{Zn}=0,1\left(mol\right)\Rightarrow m_{ZnCl_2}=136.0,1=13,6\left(g\right)\\ c,Fe_2O_3+3H_2\rightarrow\left(t^o\right)2Fe+3H_2O\\ n_{Fe_2O_3}=\dfrac{n_{H_2}}{3}=\dfrac{0,1}{3}=\dfrac{1}{30}\left(mol\right)\\ \Rightarrow m_{Fe_2O_3}=\dfrac{1}{30}.160=\dfrac{16}{3}\left(g\right)\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
a: \(n_{Zn}=\dfrac{6.5}{65}=0.1\left(mol\right)\)
\(\Leftrightarrow n_{ZnCl_2}=0.1\left(mol\right)\)
\(\Leftrightarrow n_{HCl}=0.2\left(mol\right)\)
\(m_{HCl}=0.2\cdot36.5=7.3\left(g\right)\)
b: \(m_{ZnCl_2}=0.1\cdot136=13.6\left(g\right)\)