Would the amount of solid magnesium increase decrease or stay the same if you added a strong acid to it?

Solid Magnesium is considered as active metal so it reacts with strong acids like HCl and H₂SO₄ liberating Hydrogen gas according to the following equations:

Mg (s) + 2 HCl (aq) → MgCl₂ (aq) + H₂ (g)

Mg (s) + H₂SO₄ (aq) → MgSO₄ (aq) + H₂ (g)

so the amount of solid magnesium decrease by addition of strong acid to it.