Pls help and give a direct answer Select the correct answer. A compound has an empirical formula of CzHs. What is true about this empirical formula? OA It models the structure of the compound. O B. It shows the ratio of elements in the compound. O C. It gives the mass of each atom in the compound. OD. It indicates the number of atoms in the compound. O E. It describes only this one compound.​

c. electrical charges of ionic bonds.

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Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).

It will be b hydrogen