`n_{FeSO_4} = 0,25(mol)`
\(n_{FeSO_4}=\dfrac{13,2.10^{23}}{6.10^{23}}=2,2\left(mol\right)\)
\(n_{NO_2}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\\ n_A=n_{Al}+n_{Cu}=0,22+0,25=0,47\left(mol\right)\)
\(n_{O_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right);n_{N_2}=\dfrac{13,44}{22,4}=0,6\left(mol\right)\\ \Rightarrow n_B=n_{O_2}+n_{N_2}=0,5+0,6=1,1\left(mol\right)\)
\(n_{Fe}=\dfrac{15.10^{23}}{6.10^{23}}=2,5\left(mol\right)\\ \Rightarrow n_C=n_{Cu}+n_{Fe}=0,25+2,5=2,75\left(mol\right)\\ n_{CO_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right);n_{N_2}=\dfrac{2,7.10^{23}}{6.10^{23}}=0,45\left(mol\right)\\ \Rightarrow n_D=n_{O_2}+n_{CO_2}+n_{N_2}=0,25+0,5+0,45=1,2\left(mol\right)\)