Question

The concentration of salts in sea water is 3.5% (m/v). What mass of sea water cannot be evaporated to get 100 kg of the salt?

Answer 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).

Answer 2

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