First, two things. 1) Since brass is a solid at standard temperature and pressure, it is unusual to specify its density in fluid volume units, such as gallons. 2) Brass is an alloy comprising differing amounts of different metals, so its density must be specified as a range. Brass is about 8.5 times denser than water. It has a density of 8.4 to 8.75 grams per cubic centimeter. That translates to 70 to 73 pounds per US gallon.
Ice weighs about 8.34 pounds per gallon, so 21 gallons of ice would weigh approximately 175 pounds.
A gallon of 30-weight motor oil weighs approximately 7 pounds.
9.08
One gallon of nonfat milk weighs approximately 8.6 pounds.
Water weighs about 8.34 pounds per gallon. So, 40 gallons of water would weigh approximately 334.4 pounds.
Sulfur dioxide weighs about 6.645 pounds per gallon.
Roughly 8.5 lbs per gallon. You do the Math.
Approximately 6.8 pounds per gallon.
Tar weighs approximately 7.5 pounds per gallon.
Ammonia weights 5.15 pounds per gallon in contrast to water which weights 8.33 pounds per gallon.
5.67 lbs/gallon @ 60'F
1 Gallon of gasoline weighs 6.152 lbs.
Gas is 6.3 lbs. per gallon. 55 gallons of gas will weigh 346.5 lbs. A steel drum will weigh 40 lbs. and a plastic 55 gallon drum will weigh 20 lbs.
Potassium thiosulfate fertilizer weighs approximately 10.61 pounds per gallon.
The weight of 20% hydrochloric acid per gallon is around 9.4 pounds.
Approximately 6.073 pounds per US gallon.
Cornerstone 5 Plus typically weighs around 8.34 pounds per gallon.