Colleges/universities with over 2000 students nearest to Souderton: 1  Delaware Valley College (about 9 miles; Doylestown, PA; Full-time enrollment: 2,025). 2  Gwynedd Mercy University (about 9 miles; Gwynedd Valley, PA; FT enrollment: 2,125).
It seems impossible that a gallon of gasoline, which weighs about 6.3 pounds, could produce 20 pounds of carbon dioxide (CO2) when burned. However, most of the weight of the CO2 doesn't come from the gasoline itself, but the oxygen in the air. When gasoline burns, the carbon and hydrogen separate.
When you want to know how much gas is left in tank, weigh the tank and compare the numbers. Propane weighs 4.24 pounds per gallon. Each pound contains about 21,500 BTUs which translates to 91,500 BTUs per gallon. A standard '20 pound' tank will be filled to about 17 pounds or a little more.