Oil vs. Water Density. Pure water is the reference point, so it has a specific gravity of 1.000. Salt is more dense than water, so seawater has a specific gravity of about 1.025, depending on the location. Crude oil density varies by location; light crude, such as that from Texas, measures at about 0.876, and heavier oils check in at 0.918.
Symptoms of severe or chronic dehydration are extreme thirst, confusion, little or no urination, sunken eyes, very dry mouth, dry skin that lacks elasticity, low blood pressure, rapid heartbeat, rapid breathing and even delirium or unconsciousness. If not treated timely, dehydration can lead to several complications.
Dehydration in adults. Dehydration happens when more fluid is lost by the body than is replaced by drinking liquids. The risk of dehydration increases in hot weather and because of severe vomiting or diarrhoea. Symptoms of dehydration can range from mild to life threatening.