Final answer:
The balanced equation for the reaction between hydrochloric acid (HCl) and zinc (Zn) is 2HCl + Zn -> ZnCl2 + H2.
Step-by-step explanation:
The balanced equation for the reaction between hydrochloric acid (HCl) and zinc (Zn) is:
2HCl + Zn → ZnCl₂ + H₂
This equation is balanced because there are an equal number of atoms of each element on both sides of the equation. For example, there are 2 hydrogen atoms and 2 chlorine atoms on both sides. Additionally, the charges on both sides of the equation also balance out.