3. Chemical Reactions

Which of the following is the correctly balanced equation for the nuclear fission of uranium-235 when it is bombarded with a neutron?

Which of the following is the correctly balanced chemical equation for the reaction between NaCl(aq) and Hg2(C2H3O2)2(aq)?

In the chemical reaction NaOH + HCl → NaCl + H2O, which molecules are the reactants?

In the chemical equation 2HCl + Na2O → xNaCl + H2O, what value of x will balance the equation?

Consider the following unbalanced chemical equation: C_2H_5OH + O_2 → CO_2 + H_2O. What is the total number of oxygen atoms on the right-hand side of this chemical equation?

Why is it important to balance a chemical equation?