A 0.0524-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 53.6 ml. Thetemperature is 25 °C and the atmospheric pressure is 762.12 mm Hg. The column of water height inside the graduated cylinder is found to be 22.9 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 in 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 0.0524-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 53.6 ml. The
temperature is 25 °C and the atmospheric pressure is 762.12 mm Hg. The column of water height inside the graduated cylinder is found to be 22.9 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 in 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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What is the number of moles of hydrogen gas in the sample
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