the atomic number of an atom identifies the number of protons in its nucleus.

if the overall charge on the atom is neutral, what must the atomic number also identify?

a.
the most common isotope's mass

b.
the average mass of all isotopes of the atom

c.
the number of electrons in the atom

d.
the number of neutrons in the atom

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: