Ionic and covalent bonds are similar because a) Both involve the formation of ions
b) Electrons are shared in both types of bonding
c) Atoms bond in order to have octets in both types of bonding
d) Both generate unstable bonds

Ibelieve the answer 4 moles

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

In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.