Al + O2=Al + H2SO4=CaO+HCl=NaOH+H2SO4=Al+HCl=Al2O3+HCl=

Question

Al + O2=
Al + H2SO4=
CaO+HCl=
NaOH+H2SO4=
Al+HCl=
Al2O3+HCl=

Answer 1

2Al+3O2=2Al2O3
2Al+3h2so4= AL2(SO4)3+3H2 
CAO+2hCL=CACL2+H2O
2NAOH+H2SO4=NA2SO4+2H2O
2AL+6HCL= 2ALCL3+3H2
AL2O3+6HCL= 2ALCL3+3H2O
Думаю, что правильно )))