The density of water increases as the salinity increases. The density of seawater (salinity greater than 24.7) increases as temperature decreases at all temperatures above the freezing point. The density of seawater is increased by increasing pressure.
This is an application of Boyle's law: P₁V₁ = P₂V₂. we don't have to convert volume and pressure to standard forms. we can even use the pressure with mmHg 1 atm = 760 mmHg V₂ = P₁V₁ / P₂ = 745 x 500 / 760 = 490 ml Note that here we assume constant temperature
