a typical steel "30 pound" liquid propane tank weighs about 25-28 pounds empty.
propane tank markings (on collar)
propane weighs about 4.125 pounds per gallon and a "30 pound tank" will
hold about 7.5 gallons so a full tank will weigh about 55 pounds or so.
/source: wiki.answers.com/
2350lbs. on average
About 30 pounds.
The term "20 lb." refers to the weight of propane that the tank can hold when filled to its maximum capacity. The tank itself, when empty, may weigh around 18-20 pounds, hence the designation as a 20 lb. propane tank.
A 10-pound propane tank can hold approximately 2.4 gallons of propane.
A 15-pound propane tank holds less propane than a 20-pound tank, with the numbers indicating the weight of the propane the tank can contain. Specifically, a 15-pound tank can hold about 3.6 gallons of propane, while a 20-pound tank holds approximately 4.7 gallons. This difference affects the tank's usage time and how long a grill or heater can run before needing a refill. Additionally, the physical size and weight of the tanks differ, making the 20-pound tank heavier and larger.
A 100 pound propane tank has a capacity of 2,160,509 BTUs
100 pound propane tank will hold 23.58 gallon. 100 pounds / 4.24 pounds per gallon = 23.58 gallons
100lbCapacity(gallons)Weight (empty)Weight (full)Overall HeightDiameterBTU Capacity23.6 gal68 lbs170 lbs48 inches14.5 inches2,160,509
The propane tank holds 30 liters.
20 percent of 100 pounds is 20 pounds. Therefore, if there is 20 percent left in a 100-pound propane tank, there are 20 pounds of propane remaining in the tank.
19.04761904761905 ( measured @ 4.2 lbs per gallon )
Propane burns 91,547 b.t.u.'s an hour per gallon of propane. Depending on the b.t.u. output of the appliance you are running you should be able to calculate how many hours you can use your tank.