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Saltwater is solution of salt (or salts) in water. In other words, if we dissolve salt in water, we get saltwater. There are a number of ways to obtain saltwater. The most common (and natural) sources of saltwater are oceans and seas. Their water contains a high concentration of salts (as high as 3.5% or 35 gm salts per liter of ocean water), most of which is sodium chloride. That is why ocean water was originally used as source of common salt (sodium chloride). We can make salt water of any concentration (using the solubility limits of various salts in water). Brine is another name for saltwater and may have salt concentrations ranging from 3.5% to 26%. To make a saltwater solution, we simply need to add the specified amount of salt into the water and mix it.
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