All depends. Are we talking US gallons or UK gallons (they are different). Also, it matters what we are talking about, 40lb of water, molasses or engine oil of a specific gravity.
Gallons at one time were different for dry goods and liquids. The US gallon for liquids is 231 cubic inches and was the old UK wine or Queen Anne gallon. The UK gallon was standardized in 1824 so the same value was used for liquids and dry goods. This Imperial gallon was set at 277.42 cubic inches as this was the capacity of exactly 10lb of pure water at 62F. If you want a numeric value for either gallon, see www.footrule.com .
This depends on the material in the gallons. 40 pounds of water is about 5 gallons. 40 pounds of gasoline is about 7 gallons. 40 pounds of air is ... a lot of gallons.
341.2 pounds of water in 40 US gallons.
40 quarts is the same as 10 gallons.
40 pounds
6,789 pounds of plain water would be about 813.5 gallons.
7200 gallons
It would be pretty close to 40 pounds. Pounds is a unit of mass/weight. Gallons is a liquid measure. They do not convert cleanly. The density of the liquid being measured can make a big difference. If the liquid is water, there is 8 pounds to a gallon.
About 334 pounds for 40 US gallons.
Water weighs approximately 8 pounds per gallon, so 5 gallons weigh about 40 pounds.
Gallons is a liquid measurement and pounds are a solid measurement. A close estimate would be almost five gallons.
18 kilograms is 40 pounds. You can go to Google and type in anything to change it from kilograms to pounds or cups to gallons etcetera.
Gallons (a measure of liquid) and pounds (a measure of solids) are not directly related, since liquids can have different densities. A gallon of water, for example, weighs less than a gallon of motor oil. So I'd have to ask, "40 gallons of WHAT?"
40 gallons = 5120 ounce
42 gallons of water is 350.7 pounds
40 liters equates to 10.5669 US gallons.
40 quarts is the same as 10 gallons.
40 liters = 10.57 US gallons.
Assuming the oz. you refer to are weight, 40 lbs. would yield 160 gallons mixture.
10 US gallons is approximately 83.5 pounds