Water salty.Divided into the sea and ocean.Seawater liquid from the sea or ocean. In general, global ocean salinity (salinity) about 3.5% or 35 per thousand parts. That means that in the sea every 1 kg will find the salt is 35 grams (usually found in the form of ions in sodium chloride (Na +, Cl −) density surface of the ocean was 1.025 grams per milliliter. Seawater density than fresh water. The maximum density (freshwater 1.000 g / ml at 4 DEG C). Because the sea water is the weight of the salt and Electrostriction (not the current electricity, but in terms of the electric field). The freezing point of water at temperature, signed 2 degrees Celsius or 28.4 degrees Fahrenheit. In the following thousands of parts (with a concentration 35 35 ppt).
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