Which of the following statements best explains whynitrogen gas at STP is less dense than Xe gas at STP?(a) Because Xe is a noble gas, there is less tendency for the Xeatoms to repel one another, so they pack more densely inthe gaseous state.(b) Xe atoms have a higher mass than N2 molecules. Becauseboth gases at STP have the same number of molecules perunit volume, the Xe gas must be denser.(c) The Xe atoms are larger than N2 molecules and thus takeup a larger fraction of the space occupied by the gas.(d) Because the Xe atoms are much more massive than theN2 molecules, they move more slowly and thus exertless upward force on the gas container and make the gasappear denser.
Which of the following statements best explains whynitrogen gas at STP is less dense than Xe gas at STP?(a) Because Xe is a noble gas, there is less tendency for the Xeatoms to repel one another, so they pack more densely inthe gaseous state.(b) Xe atoms have a higher mass than N2 molecules. Becauseboth gases at STP have the same number of molecules perunit volume, the Xe gas must be denser.(c) The Xe atoms are larger than N2 molecules and thus takeup a larger fraction of the space occupied by the gas.(d) Because the Xe atoms are much more massive than theN2 molecules, they move more slowly and thus exertless upward force on the gas container and make the gasappear denser.
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter5: Gases
Section: Chapter Questions
Problem 36QAP: Potassium peroxide is used to absorb the CO2 produced by the people in a space vehicle....
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Question
Which of the following statements best explains why
nitrogen gas at STP is less dense than Xe gas at STP?
(a) Because Xe is a noble gas, there is less tendency for the Xe
atoms to repel one another, so they pack more densely in
the gaseous state.
(b) Xe atoms have a higher mass than N2 molecules. Because
both gases at STP have the same number of molecules per
unit volume, the Xe gas must be denser.
(c) The Xe atoms are larger than N2 molecules and thus take
up a larger fraction of the space occupied by the gas.
(d) Because the Xe atoms are much more massive than the
N2 molecules, they move more slowly and thus exert
less upward force on the gas container and make the gas
appear denser.
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