Question

How does salinity affect the density of water?

Answer 1

We can say that salinity is the amount of salt that is dissolved in water known as saline water. We can measure salinity in terms of $gsalt/kg$ seawater. It could be said as a thermodynamic state variable, along with pressure and temperature which governs physical properties such as density and heat capacity of the water.

Complete step by step answer:
We have to know that saltiness in streams, lakes, and the sea is adroitly straightforward, yet in fact testing to characterize and quantify decisively. Thoughtfully the saltiness is the amount of broken salt substance of the water. We know that salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, and sodium bicarbonate which break up into particles. The convergence of disintegrated chloride particles is here and there alluded to as chlorinity. Operationally, a broken down issue is characterized as that which can go through an extremely fine channel (generally a channel with a pore size of $0.45\mu m$, yet these days typically $0.2\mu m$). Saltiness could be expressed as a mass fraction.
We know that cold water is denser than warm water, so it will in general sink. Seawater is denser than freshwater. Saltiness, temperature and depth all influence the density of seawater. We have to know that saltiness and density share a positive relationship. We know that as density expands, the measure of salts in the water—otherwise called salinity, increases. Different occasions could add to change in the thickness of seawater. As salinity increases, the water density could also increase.

Note: We could say that saltiness can diminish from the dissolving of polar ice or increase from the freezing of polar ice. Evaporation builds saltiness and density whereas the expansion of freshwater diminishes saltiness and density. Salinity is a natural factor of impressive significance, affecting the sorts of life forms that live in water bodies.