The atmosphere is a mixture of gases ... That leaves approximately 1%, which is made up of atoms of unreactive argon, and molecules of carbon dioxide. Carbon dioxide is a product of respiration ...

down to Earth, highlighting unique properties of air's main ingredients: nitrogen, oxygen, argon and water. But things really get interesting as stealthy, one-in-a-billion types of chemicals are ...

SINCE most high-temperature chemical systems are sensitive to small partial pressures of oxygen in argon, which is commonly used as an inert atmosphere, it is of interest to know the oxygen ...