It is the letter H.
anaesthetic gas dose not have a symbol because it is not a proper gas.
its a gas tank with some gas hanging out of it
The symbol for the element argon is Ar.
N2
The symbol for hydrogen gas is H2
I2(g) is the symbol for iodine in its standard state (including its state symbol.)
the Gas is corbon dioxide. i do not know its symbol.
Oxygen's symbol is O, and oxygen in its natural gas state is O2
The symbol for Southwest Gas Corporation in the NYSE is: SWX.
The symbol for Gas Natural Inc. in the AMEX is: EGAS.
The symbol for Zion Oil & Gas Inc in NASDAQ is: ZN.
The symbol for Advantage Oil & Gas Ltd in the NYSE is: AAV.