which statement correctly describes a covalent bond?   the valence electrons are  joined in a shell around the atoms.  the valence electrons are shared between the atoms.  the valence electrons  are transferred from one atom to the other.  the valence electrons are  divided between the atoms.

The valence electrons are shared between the atoms

Ibelieve the answer 4 moles

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 -