Which of the following statements best explains why j. j. thompson's plum pudding model had to be revised? (2 points) experimental evidence showed that there was a small, dense area within the atom. experimental evidence showed that electrons were located within a small nucleus. atoms have neutrons and electrons clustered together in the center. atoms have protons and electrons organized in energy levels.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation: