When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. using the equation, mg (s) + 2hcl (aq) imported asset mgcl2 (aq) + h2 (g), if 36.5 g of mg and 2 moles of hcl are supplied, identify the limiting reagent.
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The balanced chemical reaction is:

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

We are given the amounts of reactants to be used for the reaction. This will be the starting point of the calculations.

36.5 g Mg ( 1 mol / 24.31 g ) = 1.50 mol Mg
2 mol HCl

From the reaction, the mole ratio of the reactants is 1:2. In every 1 mole of magnesium 2 mol of hydrochloric acid is required. Therefore, from the amount supplied the limiting reactant is the hydrochloric acid.