Question

what is the ratio of gases present in natural gas?​

Answer 1

“Methane is the major component of natural gas, about 87% by volume” though other sources typically give a range of around 70% to 90%. Most of the rest of nat gas is ethane, propane and/0r butane. The stuff that gets to your home “is almost pure methane.”

Answer 2

Natural Gas is a naturally-occurring mixture of hydrocarbon and non-hydrocarbon gases found in porous formations beneath the earth's surface. It is not a pure element like oxygen, but a mixture of gases of which hydrocarbon gases are the components that are combustible and produce heat. 

Natural gas distributed by utilities varies in composition. The heat-producing hydrocarbons are composed of the elements Carbon and Hydrogen. Methane (CH4) is always the largest component. Ethane, propane (C3H8) and butane are heavier, "hotter" hydrocarbons produced from natural gas wells, and are present in low concentration. Nitrogen, Oxygen, and Carbon Dioxide are the major components (99.9%) of air, but are considered contaminants of natural gas. 



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