1) Which statement is false? A) The average kinetic energies of molecules from s
ID: 552385 • Letter: 1
Question
1) Which statement is false?
A) The average kinetic energies of molecules from samples of different "ideal" gasses is the same at the same temperature.
B) The molecules of an ideal gas are relatively far apart
C) All molecules of an ideals gas have the same kinetic energy at constant temperature
D) Molecules of a gas undergo many collision with each other and the container walls.
E) Molecules of greate mass have a lower average speed then those of less mass at the same temperature.
2)The volume correction term in the van der Waals equation is present because:
A) barometers are inaccurate
B) molecules are diatomic
C) molecules attract each other
D) molecules occupy volume
E) molecules repel each other
Explanation / Answer
1.
C. Is wrong
Because all molecules donot have same energy but their average kinetic energy is same at same temperature.
2.
D.
Molecules occupy volume.
At high pressures total volume occupied by the gas is small, hence volume of each molecule is also to be considered.
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