1. Balanced Chemical Equation:

The balanced chemical equation for the reaction is:

Mg + 2 HCl → MgCl₂ + H₂

2. Mole Ratio:

The equation shows that 1 mole of Mg reacts with 2 moles of HCl.

3. Calculation:

* You have 2.50 moles of Mg.

* Since the mole ratio is 1:2 (Mg:HCl), you need twice the amount of HCl.

* Therefore, you need 2.50 moles Mg * 2 moles HCl/1 mole Mg = 5.00 moles HCl.

4. Mass of HCl:

* The molar mass of HCl is 1.01 g/mol (H) + 35.45 g/mol (Cl) = 36.46 g/mol.

* Mass of HCl = 5.00 moles HCl * 36.46 g/mol HCl = 182.3 g HCl

Therefore, 182.3 grams of HCl are consumed by the reaction of 2.50 moles of magnesium.