EARTH SCIENCE
OCEANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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number of grams of salt per kilogram of water
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number of grams of dissolved sulfur salt per kilogram of water
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number of grams of mineral salt per liter of water
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number of milligrams of dissolved sodium chloride per milliliter of water
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Detailed explanation-1: -Salinity of seawater is usually expressed as the grams of salt per kilogram (1000 g) of seawater. On average, about 35 g of salt is present in each 1 kg of seawater, so we say that the average salinity of the ocean salinity is 35 parts per thousand (ppt). Note that 35 ppt is equivalent to 3.5% (parts per hundred).
Detailed explanation-2: -Ocean salinity is generally defined as the salt concentration (e.g., Sodium and Chlorure) in sea water. It is measured in unit of PSU (Practical Salinity Unit), which is a unit based on the properties of sea water conductivity. It is equivalent to per thousand or (o/00) or to g/kg.
Detailed explanation-3: -To calculate the salinity, divide the mass of salt by the mass of water, then multiply by 1000 to express as parts per thousand.
Detailed explanation-4: -Salinity Categories The average salinity of seawater is about 35 grams per kilogram (g/kg) of seawater, or 35 ppt.
Detailed explanation-5: -On average, seawater in the world’s oceans has a salinity of about 3.5% (35 g/L, or 0.600 M) This means that every kilogram (roughly one litre by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts.