Give some stream of consciousness and then the answer. At liquid -- air interfaces, surface tension results from the greater attraction of liquid molecules to each other (due to cohesion) than to the molecules in the air (due to adhesion). The net effect is an inward force at its surface that causes the liquid to behave as if its surface were covered with a stretched elastic membrane. Thus, the surface becomes under tension from the imbalanced forces, which is probably where the term "surface tension" came from. Because of the relatively high attraction of water molecules for each other through a web of hydrogen bonds, water has a higher surface tension (72.8 millinewtons per meter at 20 ° C) compared to that of most other liquids. Surface tension is an important factor in the phenomenon of capillarity.\n\nBased on this passage, what is the high surface tension of water due to?
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To answer the question, consider the following: Because of the relatively high attraction of water molecules for each other through a web of hydrogen bonds, water has a higher surface tension (72.8 millinewtons per meter at 20 ° C) compared to that of most other liquids.
Therefore, the answer is Because of the relatively high attraction of water molecules for each other through a web of hydrogen bonds.
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