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What is the mass of a piece of magnesium which produces 29.1 mL of hydrogen gas collected over water at 22.5 degrees C and at a pressure of 749 torr when dissolved in excess hydrochloric acid?
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Consider reacting 100.00 mg magnesium with 20 mL of 1 M hydrochloric acid. Which reactant is limiting reagent? What is theoretical yield of hydrogen? express your answer in millimoles.
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