Salt water
I know helium is an inert gas, and it is colorless, odorless, and nontoxic. Argon is non toxic, but I am not sure how safe it is to eat. Again, it is non toxic.
This gas must be:- non toxic- non explosive- non flammable- non corrosive- non expensive
The heaviest gas at: 293.15º K is WF6, or Tungsten Hexafluoride.
Argon is a non-toxic gas, although people have died from mistakenly inhaling it. It suffocates.
No. It is a non-toxic gas. However, some of its compounds - although difficult to produce - are toxic.
Liquefied natural gas, or LNG, is natural gas in a liquid form that is clear, colorless, odorless, non-corrosive, and non-toxic.
It's non toxic but it is a gas so it can't exactly be eaten.
Non-Toxic I am 100% Correct
SO2 is the heaviest
Flammable gas will burn. Toxic gas is poisonous. A gas can be toxic, but not flammable, flammable but not toxic, both, or neither.
It is NOT. non-toxic, non-explosive, non-reactive, non-corrosive: almost completely INERT. However, if you breath pure nitrogen gas you asphyxiate and die because there is no oxygen. However, don't stick your fingers in liquid nitrogen, they'll be 'burned' at -190oC.