If you mean, 'how do you make a gas?'
It depends on what you are trying to make into gas, but to turn water into gas you have to heat it to 100degrese, then it starts to vapourise (steam) and then its a gas!
Certain liquids have to be heated to certain degrese to make them vapourise.
laughing gas is nitrous oxide, it was simply discovered not invented
it was invented in the 1940
Garett Morgan invented the gas mask. I'm not sure when and where, though. By SkyQueen1234 Garrett Moragan invented the gas mask in in 1914 and never used it until 1916. and i don't know where Mr.Morgan invented the gas mask ! BY :FREASHCHICK123
Gas is a natural state of matter and has been around for billions of years, as have fluids and solids, so gas was not "invented".
jhetty ses it was
Garrett A. Morgan invented gas masks on October 13, 1914.
The gas refrigeration was jointly invented by one Albert Einstein and his former student called Leó Szilárd. The gas refrigeration that they invented had no moving parts and operated at a constant pressure.
"A gas saving device was invented by someone."
Bob
1932
Celsius
It was invented july 25,1916.it was inveted by garett morgan.