The first two shielding gases, argon, and helium, are inert, while the other four—hydrogen, oxygen, carbon dioxide, and nitrogen—are semi-inert. 1. Argon (Ar) Used primarily when welding stainless steel and aluminum, argon also works on carbon steel with arc stability and continuous metal transfer from the weld pool's electrode. Methane (US: / ˈ m ɛ θ eɪ n / METH-ayn, UK: / ˈ m iː θ eɪ n / MEE-thayn) is a chemical compound with the chemical formula CH 4 (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas.The relative abundance of methane on Earth makes it an economically attractive fuel, although capturing and storing it poses The atmospheric concentrations of long lasting greenhouse gases like methane (CH 4 ), carbon dioxide (CO 2 ), chlorofluorocarbons (CFCs), nitrous oxide (N 2 O), and carbon tetrachloride (CCI 4 ) continue to increase because of anthropogenic activities. List of Ozone Depleting Substances Is Ozone a greenhouse gas? Wobbe Index Definition. The Wobbe Index for a fuel gas can be calculated using its higher heating value and relative density as follows: \displaystyle I_ {w} = \cfrac {\text {HHV}} {\sqrt {RD}} I w = RDHHV. The Wobbe index is the ratio of the specific energy of a gas to its relative flow rate as shown by its constituent components: H H V. Hydrogen sulfide is a chemical compound with the formula H 2 S.It is a colorless chalcogen-hydride gas, and is poisonous, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. The underground mine gas term for foul-smelling hydrogen sulfide-rich gas mixtures is stinkdamp.Swedish chemist Carl Wilhelm Scheele is credited with having Acid rain describes any form of precipitation that contains high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth SnmtT.

name two fuel gases