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When 45.0 g of Mg(OH)2 reacts with 45.0 g of HCl according to the equation below, Mg(OH)2 produces 0.772 mol of MgCl2 and HCl produces produces 0.616 mol of MgCl2. What compound is the limiting reagent?
Mg(OH)2 + 2HCl MgCl2 + 2H2O
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