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Hydrogen gas can be produced in the laboratory through the reaction of magnesium metal with hydrochloric...

Hydrogen gas can be produced in the laboratory through the reaction of magnesium metal with hydrochloric acid:
Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)

What is the volume, in liters, of H2 gas produced at 27 ∘C and 820 mmHg from the reaction of 30.0 g of Mg?

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