Emily's house lies on the san andreas fault, and she wants to protect herself against earthquakes. what is one step she can take?

Sorry i dont understand the question can you rephase it?

I'm sorry i cant you if you don't list the elements : (

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 -

Zinc contains about 30 protons