About 1980, the United States Postal Service detached the two-thirds of greater Oxon Hill that was furthest from Washington, D.C. and re-defined that part as a new postal designation, Fort Washington, MD.
A gallon of paint is heavier than a gallon of water. Mostly anything that mixes a solid into the water will be heavier than water. Most homes have a can of Spackle , which is a common liquid for patching drywall and it is almost twice as heavy as water. Of course,mercury is the heaviest liquid, but isn't common around the house anymore. But if you have a mercury switch for turning on your furnace, then that would be the heaviest common liquid by far. Which, I assume, discounts mercury - oil is lighter than water, so two choices would be sugar water or salt water.
Density of water  The density of water is greatest at about four degrees C (39.2Â° F or 277degrees Kelvin) which is a density of 1.000 kg per liter (62.4 pounds per cubic fo â¦ ot). Liquids expand slightly as their temperature is raised, but liquid water is denser than solid water (ice).