Saltwater

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-'''[[Seawater]]''' or '''[[Saltwater]]''' is '''[[water]]''' from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram, or every litre, of seawater has approximately 35 grams (1.2 oz) of dissolved '''[[salt]]'''s (mostly, but not entirely, the ions of '''[[sodium chloride]]''': Na+, Cl−). The average '''[[density]]''' of seawater at the ocean surface is 1.025 g/ml; seawater is denser than '''[[fresh water]]''' (which reaches a maximum density of 1.000 g/ml at a temperature of 4 °C (39 °F)) because of the '''[[salt]]'''s’ added mass. The '''[[freezing point]]''' of sea water decreases with increasing '''[[salinity]]''' and is about '''−2 °C (28.4 °F)''' at 35 g/L.[1].+'''[[Seawater]]''' or '''[[Saltwater]]''' is '''[[water]]''' from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram, or every litre, of seawater has approximately '''35 grams''' (1.2 oz) of dissolved '''[[salt]]'''s (mostly, but not entirely, the ions of '''[[sodium chloride]]''': Na+, Cl−). The average '''[[density]]''' of seawater at the ocean surface is '''1.025 g/ml'''; seawater is denser than '''[[fresh water]]''' (which reaches a maximum density of '''1.000 g/ml''' at a '''[[temperature]]''' of 4 °C (39 °F)) because of the '''[[salt]]'''s’ added mass. The '''[[freezing point]]''' of sea water decreases with increasing '''[[salinity]]''' and is about '''−2 °C (28.4 °F)''' at 35 g/L.
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Revision as of 16:08, 6 June 2010

Seawater or Saltwater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram, or every litre, of seawater has approximately 35 grams (1.2 oz) of dissolved salts (mostly, but not entirely, the ions of sodium chloride: Na+, Cl−). The average density of seawater at the ocean surface is 1.025 g/ml; seawater is denser than fresh water (which reaches a maximum density of 1.000 g/ml at a temperature of 4 °C (39 °F)) because of the salts’ added mass. The freezing point of sea water decreases with increasing salinity and is about −2 °C (28.4 °F) at 35 g/L.




Reference

  1. Wikipedia see Seawater [1]

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