A. The average kinetic energy of the gases is
the same.
B. The average molecular speed of the gases
is the same.
C. The temperature of the gases is di?erent.
Which statements are true?
1. B only
2. A only
3. B and C only
4. A and B only
5. C only
6. None is true.
7. A and C only
8. All are true.

Which statement is FALSE?
1. The average kinetic energies of molecules
of samples of di?erent ideal gases at the same
temperature are the same.
2. The molecules of a gas move in straight
paths until they collide with other molecules
or the walls of their containers, according to
the kinetic molecular theory.
3. At a given temperature, according to kinetic molecular theory, the average velocity of
He molecules is less than the average velocity
of F2 molecules.
4. The molecules of an ideal gas are relatively very far apart on the average.

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