Answer:
grams of salt = 43.05 grams
Step-by-step explanation:
Salinity is the measure of the amount of dissolved salt in water. Salinity is usually expressed in part per thousand(ppt) or grams of the salt per kilogram of water. In a situation where you have 1 gram of salt and 1 kg of water , the salinity is 1 g/kg or 1 ppt.
Since 1 ppt denotes having 1 g of salt in 1000 grams of water, 21 ppt will be having 21 grams of salt in 1000 grams of water.
if 21 grams of salt → 1 000 g of water
? grams of salt will be in 2050 g of water
cross multiply
grams of salt = (2050 × 21)/1000
grams of salt = 43050/1000
grams of salt = 43.05
grams of salt = 43.05 grams