Use your balanced reaction to make a "for every" statement for magnesium and hydrogen gas in this reaction

Right answer is C.

Explanation:

Based on the reaction with magensium, Mg, and hydrochloric acid, HCl:

Mg + 2HCl → MgCl₂ + H₂

The reaction is balanced in moles therms

We can see that 1 mole of Magnesium is reacting with 2 moles of HCl to produce 1 mole of MgCl₂ and 1 mole of H₂. In another words:

For every 1 mole of magnesium, the reaction uses 2 moles of hydrochloric acid.