Harriet Tubman. Harriet Tubman (born Araminta Ross; c. 1822 â March 10, 1913) was an American abolitionist, humanitarian, and an armed scout and spy for the United States Army during the American Civil War.
Rating Newest Oldest. Best Answer: Natural gas is piped to your home as a vapour while propane is stored as a liquid in portable containers. You are still burning vapour not liquid with a propane appliance. When you draw off the vapour and burn it, the liquid in the tank boils to create more vapour.
Burning one cubic foot of natural gas produces approximately 1,012 BTUâs of heat while burning one cubic foot of propane produces 2,520 BTUâs of heat. The difference in heat content per cubic foot does not mean that natural gas is less desirable as a heating fuel.