\(2KClO_3\rightarrow2KCl+3O_2\)
Ta có: \(n_{KClO3}=\frac{73,5}{39+35,5+16.3}=0,6\left(mol\right)\)
Theo phản ứng : \(n_{KCl}=n_{KClO3}=0,6\left(mol\right)\Rightarrow m_{KCl}=0,6.\left(39+35,5\right)=44,7\left(g\right)\)
\(n_{O2}=\frac{3}{2}n_{KClO3}=0,9\left(mol\right)\Rightarrow V_{O2}=0,9.22,4=20,16\left(l\right)\)
b) \(2Zn+O_2\rightarrow2ZnO\)
\(n_{ZnO}=2n_{O2}=1,8\left(mol\right)\)
\(m_{ZnO}=1,8\left(65+16\right)=145,8\left(g\right)\)