a)\(4P+5O2-->2P2O5\)
\(n_P=\frac{9,3}{31}=0,3\left(mol\right)\)
\(n_{O2}=\frac{5}{4}n_P=0,375\left(mol\right)\)
\(\Rightarrow V_{O2}=0,375.22,4=8,4\left(l\right)\)
b)\(2KCLO3-->2KCl+3O2\)
\(n_{KClO3}=\frac{2}{3}n_{O2}=0,25\left(mol\right)\)
\(m_{KClO3}=0,25.122,5=30,625\left(g\right)\)
4P+5O2-->2P2O5
0,3---0,375---mol
nP=9,3/31=0,3 mol
=>Vo2=0,375.22,4=8,4 l
2KClO3-->2KCl+ 3O2
0,25----------------------0,375 mol
=> mKClO3 =0,25.122,5=30,625 g