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What is the percentage of salt in ocean water?

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Two of the most prevalant ions in seawater are chloride and sodium. Together, they make up over 90 percent of all dissolved ions in the ocean. Sodium and Chloride are 'salty.' The concentration of salt in seawater (salinity) is about 35 parts per thousand, on average. Stated in another way, about 3. read more

For instance, although seawater contains about 2.8 times more bicarbonate than river water, the percentage of bicarbonate in seawater as a ratio of all dissolved ions is far lower than in river water. read more

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