a liquid molecule just at the free surface of liquid experience
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Answer:
a liquid molecule just at the the free surface of liquid experiences only net inward cohesive forces.
Explanation:
Surface tension is measured as the energy required to increase the surface area of a liquid by a unit of area. The surface tension of a liquid results from an imbalance of intermolecular attractive forces, the cohesive forces between molecules:
A molecule in the bulk liquid experiences cohesive forces with other molecules in all directions.
A molecule at the surface of a liquid experiences only net inward cohesive forces.
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