Answer:
about 20 g
Step-by-step explanation:
Seawater has a salinity of about 3.5%, or 35 parts per thousand. Due to the inflow of fresh water in the Baltic Sea, it has a lower salinity, but it is still measured in parts per thousand, not parts per trillion (the other meaning of "ppt").
The weight of salt in 2 kg of water is expected to be
(2×10^3 g) × (10×10^-3) = 20 g
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Comment on PPT
The US National Institute of Standards and Technology (NIST) recommends against the use of quantifiers such as PPT, which are context- and country-dependent.
