11_salinity - Why is the ocean salty Dissolution/hydration...

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Why is the ocean salty? Dissolution/hydration Anomalous property of seawater Definition of salinity Where does salt come from? How is salt removed from the ocean? Residence time and ‘rule of constant proportion’
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Why is the ocean salty? Dissolution/hydration Definition of salinity Major constituents Trace elements Rule of constant proportion Where does salt come from? How is salt removed from the ocean? Residence time and ‘rule of constant proportion’
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Major constituents Minor constituents
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Salinity is measured in ‰ AKA permil AKA parts per thousand. In 1 kg (1000 grams) of water there is 965.31 g of pure water and 34.69 g of salt Salinity = 34.69‰ Average ocean salinity = 35‰
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Rule of constant proportion = all major constituents have the same relative concentrations in the ocean. We only need to measure one to know salinity. Cl is the most common ion so it is the easiest to measure.
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If the salinity of ocean water was 37‰, there would be ______ grams of solid salts left from evaporation of 2 kilograms of seawater.
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Why is the ocean salty?
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  • Fall '10
  • IngridHendy
  • 1 kg, 2 kilograms, residence time, constant proportion, 34.69 g

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