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A technique used for determination of the structure of a crystalline substance and obtaining information from which the unit cell data can be obtained is a. magnetic resonance imaging (MRI) b. microwave spectroscopy c. infrared spectroscopy d. ultraviolet laser scattering e. x-ray diffraction How many lattice points does it require to fully define a body centered cubic unit cell? а. 2 b. 4 с. 8 d. 9 е. 14

A technique used for determination of the structure of a crystalline substance and obtaining information from which the unit cell data can be obtained is a. magnetic resonance imaging (MRI) b. microwave spectroscopy c. infrared spectroscopy d. ultraviolet laser scattering e. x-ray diffraction How many lattice points does it require to fully define a body centered cubic unit cell? а. 2 b. 4 с. 8 d. 9 е. 14

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I need help with 17 & 18 please and thank you.

Use the following for #11 and #12: Consider the following substances and their normal boiling points, in °C: C: 43.8°C D: 93.7°C M: 56.7°C T: 83.5°C R: 63.6°C 11. Which set below correctly lists some of these substances in order of decreasing vapor pressure at 20°C? a. C>R> D b. D>T>R c. R > M > D d. C> D> M e. D>R >M 12. Which set below correctly lists some of these liquids in order of increasing intermolecular forces at 20°C? a. C<R<D b. D<T <R c. R <T <C d. C<D<M e. D<R<M 13. Given the phase changes: condensation, deposition, crystallization, fusion, sublimation, vaporization. Which (set) of these phase changes is (are) endothermic? a. deposition, condensation, and crystallization only b. fusion only c. fusion and vaporization only d. fusion, deposition, and sublimation only e. sublimation, fusion, and vaporization only 14. The critical temperature of a substance is a. always higher than the triple point temperature b. the temperature below which it cannot exist in the liquid state c. the temperature which is always higher than the Kelvin point d. the temperature below which it cannot be liquefied by increasing the e. the temperature below which it cannot be supercooled pressure 15. Which one of the following noble gas elements will have the lowest critical point temperature? a. Ar b. Ne с. Kr d. Rn е. Хе 16. Which one of the following cannot be liquefied by compression at a temperature of 25.0°C? a. C2H4, critical point data: 9.9°C, 50.5 atm b. CH3CI, critical point data: 144.0°C, 66.0 atm c. C2H2, critical point data: 35.5°C, 61.6 atm d. C2H6, critical point data: 32.2°C, 48.2 atm e. SO2, critical point data: 158.0°C, 78.0 atm 17. A technique used for determination of the structure of a crystalline substance and obtaining information from which the unit cell data can be obtained is a. magnetic resonance imaging (MRI) b. microwave spectroscopy c. infrared spectroscopy d. ultraviolet laser scattering e. x-ray diffraction 18. How many lattice points does it require to fully define a body centered cubic unit cell? а. 2 b. 4 с. 8 d. 9 е. 14
Transcribed Image Text:Use the following for #11 and #12: Consider the following substances and their normal boiling points, in °C: C: 43.8°C D: 93.7°C M: 56.7°C T: 83.5°C R: 63.6°C 11. Which set below correctly lists some of these substances in order of decreasing vapor pressure at 20°C? a. C>R> D b. D>T>R c. R > M > D d. C> D> M e. D>R >M 12. Which set below correctly lists some of these liquids in order of increasing intermolecular forces at 20°C? a. C<R<D b. D<T <R c. R <T <C d. C<D<M e. D<R<M 13. Given the phase changes: condensation, deposition, crystallization, fusion, sublimation, vaporization. Which (set) of these phase changes is (are) endothermic? a. deposition, condensation, and crystallization only b. fusion only c. fusion and vaporization only d. fusion, deposition, and sublimation only e. sublimation, fusion, and vaporization only 14. The critical temperature of a substance is a. always higher than the triple point temperature b. the temperature below which it cannot exist in the liquid state c. the temperature which is always higher than the Kelvin point d. the temperature below which it cannot be liquefied by increasing the e. the temperature below which it cannot be supercooled pressure 15. Which one of the following noble gas elements will have the lowest critical point temperature? a. Ar b. Ne с. Kr d. Rn е. Хе 16. Which one of the following cannot be liquefied by compression at a temperature of 25.0°C? a. C2H4, critical point data: 9.9°C, 50.5 atm b. CH3CI, critical point data: 144.0°C, 66.0 atm c. C2H2, critical point data: 35.5°C, 61.6 atm d. C2H6, critical point data: 32.2°C, 48.2 atm e. SO2, critical point data: 158.0°C, 78.0 atm 17. A technique used for determination of the structure of a crystalline substance and obtaining information from which the unit cell data can be obtained is a. magnetic resonance imaging (MRI) b. microwave spectroscopy c. infrared spectroscopy d. ultraviolet laser scattering e. x-ray diffraction 18. How many lattice points does it require to fully define a body centered cubic unit cell? а. 2 b. 4 с. 8 d. 9 е. 14
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