A student adds a rectangular blocks of mass 26.10 g to graduated cylinder filled with 40.1 mL of water, the student read the new level of water to be 42.7 mL previously student measured the length, width and height of the block to be 3.0 cm by 1.0 cm by 1.0 cm

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 -