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Magnesium metal reacts with hydrochloric acid to give hydrogen gas. Mg + 2 HCl → MgCl2 + H2 Use the following reaction information to answer the subsequent questions. Show all of your work. 92 mm Length of Magnesium ribbon: Barometric Pressure: 762.9 mmHg Water Temperature: 29 °C Initial Gas Volume: 0.00 mL Final Gas Volume: 67.35 mL 0.7559 Mass = Length (in mm) x (1000 mm) 1. Magnesium is usually found in the laboratory as a ribbon strip. Find the mass of the Mg strip used in this reaction: 2. Calculate the number of moles of Mg reacted. 3. How many moles of H2 gas were produced (Hint: Use the mole ratio)? 4. Calculate the pressure of the dry hydrogen gas collected. 5. Calculate the experimental molar mass of H2 given that the density of H2 is 0.0899g/L.
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