Molecular diffusion is caused by the________________?
Correct answer: C. Thermal energy of the molecules
- A. Transfer of molecules from low concentration to high concentration region
- B. Activation energy of the molecules
- C. Thermal energy of the molecules
- D. Potential energy of the molecules
Explanation
Molecular diffusion results from the random thermal motion of molecules, which produces a net movement down a concentration gradient. Activation or potential energy is not the basic cause of ordinary molecular diffusion.
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