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Effusion

Q. 11. One mole of H 2 S gas lescapes from a container by leffusion in 77 seconds. How long would it take one mole of NH 3 gas to escape from the same container ?

Solved • May 3, 2020

Effusion

Q. An unknown gas is found to diffuse through a porous membrane 2.92 times more slowly than H2. What is the molecular mass of the gas?

Solved • Apr 13, 2020

Effusion

Q. 6.) He gas effuses 3.081 times more rapidly when in a mixture with an unknown gas. a. What is the molar mass of the unknown gas?

Solved • Apr 17, 2020

Effusion

Q. 5. Uranium-235 is fissile and can be used for nuclear bombs. However, it must have a purity of 80% over uranium-238. Uranium-235 has an abundance of .720% while uranium-238 has an abundance of 99.274%. To purify uranium-235, the mixture of isotopes is turned into UF6 and subjected to effusion (diffusion). What is the ratio of rates for effusion of uranium-235 to uranium-238?

Solved • Apr 17, 2020

Effusion

Q. A compound composed of carbon, hydrogen, and chlorine effuses through a pinhole 0.411 times as fast as neon. Which of these is most likely to be the compound? A. CH2Cl2 B. CHCl3 C. C2H2Cl2 D. CCl4 E. C2H3Cl

Solved • Apr 8, 2020

Effusion

Q. What is the ratio of effusion rates for the lightest gas, H2, to the heaviest known has, UF6? A. 0.07568 B. 0.0057 C. 175 D. 13.21 E. none of these is with 5% of the correct answer

Solved • Apr 8, 2020

Effusion

Q. Equal volumes of an unknown gas and nitrogen gas take 5.37 min and 3.55 minutes, respectively, to effuse through a small hole. Calculate the molar mass (in g/mol) of the unknown gas. A. 12.2 B. 64.1 C. 42.4 D. 18.5 E. 128

Solved • Apr 8, 2020