42. In a mixture of gases, hydrogen molecules have an average speed times faster

Question

42. In a mixture of gases, hydrogen molecules have an average speed times faster than the average speed of nitrogen molecules A. 0.14 B. 0.27 C. 3.74 D. 7.0 E. 14 43. 4.00 grams of Oxygen g are collected over water at a temperature of 55 degree C and a total pressure of 720 torr. What Volume (in liters) does the oxygen gas occupy? A. 4.25 B 5.25 C. 6.25 D 7.25 E. 8.25 44. What is the partial pressure of helium gas (in torr) in a mixture of gases containing 8.00 g helium and 64.00 g oxygen if the total pressure is 600 torr? A. 150 B. 200 C. 300 D. 400 F. 450 45. In which of the following substances are dipole-dipole forces the strongest intermolecular attractive force present?

Explanation / Answer

42-E

43-C

44-D

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