LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The constant, random motion of molecules
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Magnetic attraction between atoms
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The nuclear forces that hold atoms together
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The tendency of atoms to form chemical bonds with one another
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Detailed explanation-1: -The molecular diffusion coefficient is caused by the random thermal motion of molecules in a gas or liquid and depends on the temperature and pressure, molecular properties, such as mass and volume, and the forces between molecules.
Detailed explanation-2: -Substances appear to move randomly due to collisions with other substances.
Detailed explanation-3: -diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room.
Detailed explanation-4: -Brownian motion is the random, uncontrolled movement of particles in a fluid as they constantly collide with other molecules (Mitchell and Kogure, 2006).