Which chemical is known by the name "Anhydrous Ammonia"?

Anhydrous Ammonia refers specifically to ammonia that is in a pure and concentrated form, free from water. This chemical formula is NH3, and it is commonly used as a refrigerant in industrial refrigeration systems due to its effective thermodynamic properties. The term "anhydrous" indicates the absence of water, which is crucial in many applications where the presence of moisture can lead to complications or inefficiencies.

In refrigeration systems, anhydrous ammonia is favored because of its high heat absorption capability and energy efficiency. It also has a relatively low cost compared to other refrigerants and is considered environmentally friendly due to its low global warming potential.

The other chemical options do not correspond to the designation of "Anhydrous Ammonia." Carbon Dioxide is CO2, which has different properties and uses. Nitrogen (N2) serves as an inert gas in various applications but lacks the properties of ammonia. Ammonium Hydroxide refers to a solution of ammonia in water, which is contrary to the definition of anhydrous as it contains water. Thus, the correct understanding of "Anhydrous Ammonia" is aligned with the chemical Ammonia itself.