Question 4. Sea water contains (a) 97.3% of salt (b) 2% of salt (c) 0.68% of salt (d) 0.973% of salt Answer
Sea water salinity is expressed as a ratio of salt (in grams) to liter of water. In sea water there is typically close to 35 grams of dissolved salts in each liter. It is written as 35 ‰ The normal range of ocean salinity ranges between 33-37 grams per liter (33‰ - 37‰).
