# is nitrogen gas a compound

Nitrogen fixation | Definition, Process, Examples, Types, & Facts » Nitrogen fixation, any natural or industrial process that causes free nitrogen, which is a relatively inert gas plentiful in air, to combine chemically with other elements to form more-reactive nitrogen compounds such as ammonia, nitrates, or nitrites. Learn more about nitrogen fixation in this article. Britannica.com

Nitrogen Dioxide » Nitrogen dioxide, or NO2, is a gaseous air pollutant composed of nitrogen and oxygen. NO2 forms when fossil fuels such as coal, oil, gas or diesel are burned at high temperatures. Lung.org

Basic Information about NO2 | US EPA » Nitrogen Dioxide (NO2) and other nitrogen oxides (NOx) damage the human respiratory system and contribute to acid rain. These air pollutants are regulated as part of EPA's National Ambient Air Quality Standards (NAAQS). Epa.gov

Air Pollution from Nitrogen Dioxide » General information on nitrogen dioxide and TCEQ planning to address the standard for this pollutant. Tceq.texas.gov

What is Nitrogen Purging & How Does it Work? » What is nitrogen purging? Learn why N2 purging is required in so many industrial processes, and how to do it efficiently today! Nigen.com

Nitrogen Dioxide » Nitrogen dioxide appears as a reddish brown gas or yellowish-brown liquid when cooled or compressed. Shipped as a liquefied gas under own vapor pressure. Pubchem.ncbi.nlm.nih.gov