If 82.00 grams of sodium react with 74.00 grams of iron(iii) oxide to form sodium oide and iron. what mass of iron is produced

Cause its being chemically applied?

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 -

The disturbance is only parallel to the motion of the wave.