dissociation by evaporation
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Evaporation is a surface phenomenon because, during evaporation, the molecules with higher kinetic energy dissipate into the air from the topmost layer of the liquid so it is a surface phenomenon. When water is kept in the presence of sunlight, with the increasing duration of time, the temperature of the water increases and the hydrogen bonds of H2O from the surface starts breaking due to which the dissociated molecules move upward. Therefore, evaporation takes place from the surface but not from the inside.
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Hydroelectricity, or hydroelectric power, is electricity produced from hydropower. In 2015, hydropower generated 16.6% of the world's total electricity and 70% of all renewable electricity, and was expected to increase by about 3.1% each year for the next 25 years.
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