because salt is higher density than water and dissolves in the water, increasing density
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If an object placed in water sinks - then it has a density greater than water.
A density greater than that of water (which varies with temperature).
water has less density than lead. Mass depends on its volume
The density of water is greater than the density of ethanol. This is partly a result of how tightly packed the molecules of the substance are.
Seawater has a greater buoyant force than fresh water because seawater has a higher density than fresh water therefore the buoyancy is higher. *Improved* This happens because when water mixes with the salt in sea water, the density changes to the average density which is around 1.55 g/mL (Average density is the density of different materials put to together )