How much of a 25% hydrochloric acid solution is needed to dissolve 15 g of magnesium?

Let’s write the reaction equation:
2HCl + Mg = MgCl2 + H2.
Find the number of moles of magnesium reacted:
n (Mg) = 15/24 = 0.6 mol.
From the equation it can be seen that the amount of hydrochloric acid is twice as much as magnesium, respectively, we get:
n (HCl) = 2 * 0.6 = 1.2 mol.
Acid mass: m (HCl) = n * Mr = 1.2 * 36.5 = 44 g.
The mass for a 25% acid solution will be equal to:
m (HCl) = m * Wm / W = 44 * 100/25 = 176 g.