Giải thích các bước giải:
`a, \ 2Al(OH)_3 overset(t^o)to Al_2O_3 + 3H_2`
`b, \ Fe+2HCl to FeCl_2 + H_2`
`c, \ 4Al+3O_2 overset(t^o)to 2Al_2O_3`
`d, \ 2KClO_3 overset(t^o)to 2KCl + 3O_2`
`e, \ 2Na+2H_2O to 2NaOH+H_2`
`f, \ 3H_2 + Fe_2O_3 overset(t^o)to 2Fe+3H_2O`
`g, \ Mg+2HCl to MgCl_2+H_2`