5.81(б) 5.82(б) 5.84(а) СРОЧНО ПОЖАЛУЙСТА
Zn+2HCl=ZnCl2+H2 n(Zn)=39/65=0.6 n(H2)=0.6 V(H2)= 0.6*22.4=13.44дм3 Мg+2HCl=MgCl2+H2 n(H2)=56/22.4=2.5 n(Mg)=2.5 m(Mg)= 2.5*24=60г S+O2=SO2 V(SO2)=6.72 n(SO2)= 6.72/22.4=0.3 n(S)= 0.3