Question

A sealed 22.4 L flask contains pure O2 at STP. A second sealed 22.4 L flask contains CH4 at STP. Which of the following statements concerning the molecules in the flasks is/are true?
1) The average kinetic energy of the O2molecules is greater than the average kinetic energy of CH4molecules.
2) The average velocity of the CH4molecules is greater than the average velocity of the O2molecules.
3) The volume occupied by the gas molecules in both flasks is small relative to the total volume of the flasks.
A) 1 only
B) 2 only
C) 3 only
D) 2 and 3
E) 1, 2, and 3

Answer

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