The equation is already balanced and the NaCl will disassociate in Na+ and Cl- and HCl will disassociate into H+ and Cl- and NaOH will disassociate into Na+ and OH-. Na+ is on both sides of the equation and stays the same, so Na+ will be the spectator ion.
According to the law of conservation of energy, the total amount of energy in the universe is constant.
The law of Conservation of Energy states that Energy cannot be created or destroyed. The total amount of energy in the universe never changes, although it may change from one form to another.
Energy never disappears, but it does change from one form to another. For example; when we eat our food has stored energy in it.
