Natural-gas processing at ambient conditions (i.e., pentane and heavier) are called "natural-gas condensate" (sometimes also called "natural gasoline" or simply "condensate"). Natural gas is called "sweet gas" when relatively free of hydrogen sulfide; gas that does contain hydrogen sulfide is called "sour gas". Natural gas, or any other gas mixture, containing significant quantities of hydrogen sulfide, carbon dioxide or similar acidic gases, is called "acid gas." Raw natural gas can also come from methane deposits in the pores of coal seams, and especially in a more concentrated state of adsorption onto the surface of the coal itself. Such gas is referred to
Natural gas in Canada Natural gas in Canada At per day in 2011, Canada was the fourth-largest producer of natural gas in the world. Its proven reserves were at the close of 2006. A large portion of Canada's gas is exported to the United States; in 2006, per day. In 2016 natural gas was used to provide 35% of all energy in Canada, double the amount supplied by electricity. Electricity generated by natural gas was 8.5% of the nations total. Natural gas is used to supply 50% of space heating, and 65% of water heating in homes, similarly 80% of businesses use natural gas