Solving this problem helps the student to understand what is happening in a chemical reaction and to balance the given equation.
prepare balanced equations for each of the following by inserting the right coefficients in the blanks:
(i) Fe(s) + H2O(g) → Fe3O4(s) + H2(g)
(ii) NO2(g) + H2O(l) → HNO3(aq) + NO(g)
(iii) Bi2O3(s) + C(s) → Bi(s) + CO(g)