Final answer:
The equation provided satisfies the Law of Conservation of Matter.
Step-by-step explanation:
The equation provided, Mg(OH)2 + NaCl → MgCl₂ + NaOH, does satisfy the Law of Conservation of Matter. To confirm this, we need to balance the equation by making sure the number of atoms on the left side of the equation is equal to the number of atoms on the right side. The balanced equation is:
2NaOH(aq) + MgCl2 (aq) → 2NaCl(aq) + Mg(OH)2 (s)
This equation demonstrates that the reactants and products have the same number and type of atoms, therefore satisfying the Law of Conservation of Matter.