For questions #27- # 30 NaOH + Al(NO3)3 27. What is the molar mass of aluminum hydroxide? A.) 92.4g/mol B.) 56.7g/mol 28. What mass of Al(OH)3 is produced from 15mL of 7.2M AI(NO3)3? NANO3 + Al(OH)3 C.) 61.2g/mol D.) 78.0g/mol A.)4.05g B.) 8.42g C.) 3.02g D.) 2.07g 29.What is the molar mass of aluminum nitrate? A) 878g/mol B) 213g/mol C.) 582g/mol D.) 812g/mol 30. What volume of 0.600M NaOH is required to react completely with 2.85g Al(NO3)3? A) 0.0214L B) 0.0711L C) 0.0669L D.) 0.0853L

For questions #27- # 30 NaOH + Al(NO3)3 27. What is the molar mass of aluminum hydroxide? A.) 92.4g/mol B.) 56.7g/mol 28. What mass of Al(OH)3 is produced from 15mL of 7.2M AI(NO3)3? NANO3 + Al(OH)3 C.) 61.2g/mol D.) 78.0g/mol A.)4.05g B.) 8.42g C.) 3.02g D.) 2.07g 29.What is the molar mass of aluminum nitrate? A) 878g/mol B) 213g/mol C.) 582g/mol D.) 812g/mol 30. What volume of 0.600M NaOH is required to react completely with 2.85g Al(NO3)3? A) 0.0214L B) 0.0711L C) 0.0669L D.) 0.0853L

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter13: Titrations In Analytical Chemistry

Section: Chapter Questions

Problem 13.13QAP

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A powdered crude sample of Na2CO3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr.What is the %purity of the sample to the nearest whole number?
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The %purity of a powdered crude sample of Na2CO3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. a. How many moles of CO2 were collected? b. What is the percent purity of the sample? Round off to the nearest whole number
The %purity of a powdered crude sample of Na2CO3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. What CASE does this experiment satisfy?
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The % purity of a powdered crude sample of Na^2CO^3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. What is the % purity of the sample to the nearest whole number?
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A core sample is saturated with an oil (?o = 35oAPI), gas and water. The initial weight of the sample is 224.14 g. After the gas is displaced by water (?w = 1 g/cm3 ), the weight is increased to 225.90 g. The sample is the placed in a Soxhlet distillation apparatus, and 4.4 cm3 water is extracted. After drying the core sample, the weight is now 209.75 g. The sample bulk volume, 95 cm3 is measured in a mercury pycnometer. Find the porosity, water saturation, oil saturation, gas saturation and lithology of the core sample.