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Depends on what the gas is. Compressed air is used by Scuba divers to breathe, auto mechanics to drive lots of theirtools, carpenters for air powered nailers. Compressed oxygen is usedto help people with breathing problems in or out of the hospital,withacetylene in oxy-acetylene torches to cut thru metals.

Maybe you mean CNG, compressed natural gas, which is mostly methane, and is used as a fuel.

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12y ago

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