Most children of school age who wet the bed at night have what doctors term primary enuresis.. They have never had nighttime control of their bladder. Family history plays a role, too, in incontinence in children. If you wet the bed as a child, don't be surprised when your child does, too.
One thing to notice is that if you put a gallon of air on a scale, (in a wieghtless container, of course) you would measure zero, exactly. That's because the buoyancy caused by the surrounding air exactly counteracts the weight of the air in the container. If you pressurized the air in your gallon container to, say ten times the outside pressure (or 147.0 psi absolute, or 132.3 psi gauge) it would now weigh nine times 0.01, or 0.09 lb.
Heavy oil weighs more than light oil. To determine the weight, we need to know the density of the oil, which is given as degrees API. Density in pounds p â¦ er gallon = 141.5/(131.5 + API) *62.4 So a heavy oil. (10 degrees API for example) , has a density of 62.4 pounds per gallon, and one gallon weighs 62.4 pounds. Gallon = 3.7854118 liters Considering a liter weighing 1 Kg (water for instance), then a gallon weighs 3.78541 â¦ 18 Kg. Water weights 8.328 lbs. per gallon. since while freezing water expands slightly a gallon of ice will be just a few onces less or approximately 8 lbs.