Task: Sentence Expansion
Input (English): Inert atmospheres of gases such as dinitrogen and argon are routinely used in chemical reactions where air sensitive and water sensitive compounds are handled .
Output (English): Inert atmospheres consisting of gases such as argon , nitrogen , or helium are commonly used in chemical reaction chambers and in storage containers for oxygen-sensitive or water-sensitive substances , to prevent unwanted reactions of these substances with oxygen or water .