ZnCl2 is the chemical formula of zinc chloride The balanced equation is about to compounds reacting with each other, or one being degraded to some other compound(s). E.g.: An balanced equation is Zn...
Add two moles of chlorine (Cl) for every mole of zinc (Zn). Zn + Cl2 --> ZnCl2. Know that pure chlorine bonds with itself to form the chlorine gas Cl2, so practically for every mole of zinc (Zn)...
The ratio of zinc to chlorine in zinc chloride is one to two. For every atom of zinc (Zn), we'll find two chlorine (Cl) atoms bonded to it. It's chemical formula is ZnCl2, just as you'd expect it to...