A 0.0500-g sample of magnesium is reacted with 25 mL of 3.0 M sulfuric acid as described in the experimental section. The resulting hydrogen gas is collected over water and is found to have a volume of 51.0 ml. Thetemperature is 25 °C and the atmospheric pressure is 760.00 mm Hg. The column of water height inside thegraduated cylinder is found to be 24.0 mm. 1. What is the height of the water column after converting to an equivalent height of mercury in mm? 2. What is the pressure of the hydrogen gas in the column in mm Hg? 3. What is the pressure in question 2 converted to atmospheres? 4.What is the number of moles of hydrogen gas in the sample?5. What is the number of moles of metal in the sample? 6. What is the calculated molar mass of the metal for this trial? 7. What is the percent error in this determination?
A 0.0500-g sample of magnesium is reacted with 25 mL of 3.0 M sulfuric acid as described in the experimental section. The resulting hydrogen gas is collected over water and is found to have a volume of 51.0 ml. The
temperature is 25 °C and the atmospheric pressure is 760.00 mm Hg. The column of water height inside the
graduated cylinder is found to be 24.0 mm.
1. What is the height of the water column after converting to an equivalent height of mercury in mm?
2. What is the pressure of the hydrogen gas in the column in mm Hg?
3. What is the pressure in question 2 converted to atmospheres?
4.What is the number of moles of hydrogen gas in the sample?
5. What is the number of moles of metal in the sample?
6. What is the calculated molar mass of the metal for this trial?
7. What is the percent error in this determination?
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