Answer:
When 4.52 moles of HCl reacts with Mg, 2.26 moles of H2 are produced.
Explanation:
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The balanced equation for the reaction is:
2HCl + Mg → MgCl2 + H2
From this equation, we can see that 2 moles of HCl produce 1 mole of H2.
So, if 4.52 moles of HCl react, we can calculate the number of moles of H2 produced as:
4.52 mol HCl × 1 mol H2 / 2 mol HCl = 2.26 mol H2
Therefore, 2.26 moles of H2 are produced when 4.52 moles of HCl react with Mg.
