\(a.Al_2O_3+6HNO_3--->2Al\left(NO_3\right)_3+3H_2O\)
\(b.3NaOH+Fe\left(NO_3\right)_3--->Fe\left(OH\right)_3\downarrow+3NaNO_3\)
\(c.3CO+Fe_2O_3\overset{t^o}{--->}2Fe+3CO_2\)
\(d.MgO+2HCl--->MgCl_2+H_2O\)
\(a,Al_2O_3+6HNO_3\rightarrow2Al\left(NO_3\right)_3+3H_2O\\ b,3NaOH+Fe\left(NO_3\right)_3\rightarrow Fe\left(OH\right)_3\downarrow+3NaNO_3\\ c,3CO+Fe_2O_3\rightarrow^{t^o}2Fe+3CO_2\\ d,MgO+2HCl\rightarrow MgCl_2+H_2O\)
a) Al2O3 + 6HNO3 ➝ 2Al(NO3)3 + 3H2O
b) 3NaOH + Fe(NO3)3 ➝ Fe(OH)3 + 3NaNO3
c) 3CO + Fe2O3 ➝ 2Fe + 3CO2
d) MgO + 2HCl ➝ MgCl2 + H2O
