please with correct sig digs Suppose a sample of helium gas at 45.0 °C sealed in a flask at a pressure of 5.63 atm wasfound to be contaminated by water. The gas was filtered through a cartridge containinga desiccant to remove the water and the dried gas was returned to the same flask withthe temperature brought down to 25.0 °C. What was the mole fraction of water in thecontaminated sample if the pressure of the dried gas at 25.0 °C was 5.23 atm?

Before drying (Contaminated sampple): Temperature, T = 45 oC + 273.15 = 318.15 K Pressure (He +…

Answered: Suppose a sample of helium gas at 45.0…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 18P

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What is the mole fraction of H 2 S O 4 in a solution containingthe percentage of sulfuric acid and water shownin Figure 14.25?
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When water is added to a mixture of aluminum metal and sodium hydroxide, hydrogen gas is produced. This is the reaction used in commercial drain cleaners: 2Al(s)+6H2O(l)+2OH(aq)2Al(OH)4(aq)+3H2(g)A sufficient amount of water is added to 49.92 g of NaOH to make 0.600 L of solution; 41.28 g of Al is added to this solution and hydrogen gas is formed. (a) Calculate the molarity of the initial NaOH solution. (b) How many moles of hydrogen were formed? (c) The hydrogen was collected over water at 25C and 758.6 mm Hg. The vapor pressure of water at this temperature is 23.8 mm Hg. What volume of hydrogen was generated?
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