<P> Liquid air has a density of approximately 870 kg / m ( 0.87 g / cm ) , though the density may vary depending on the elemental composition of the air . Since dry gaseous air contains approximately 78 % nitrogen , 21 % oxygen , and 1 % argon , the density of liquid air at standard composition is calculated by the percentage of the components and their respective liquid densities ( see liquid nitrogen and liquid oxygen ) . Although air contains trace amounts of carbon dioxide ( about 0.040 % ) , this gas sublimates ( transfers directly between gas and solid , and therefore does not exist as a liquid ) at pressures less than 5.1 atmospheres . </P>
<P> Liquid air has a density of approximately 870 kg / m ( 0.87 g / cm ) , though the density may vary depending on the elemental composition of the air . Since dry gaseous air contains approximately 78 % nitrogen , 21 % oxygen , and 1 % argon , the density of liquid air at standard composition is calculated by the percentage of the components and their respective liquid densities ( see liquid nitrogen and liquid oxygen ) . Although air contains trace amounts of carbon dioxide ( about 0.040 % ) , this gas sublimates ( transfers directly between gas and solid , and therefore does not exist as a liquid ) at pressures less than 5.1 atmospheres . </P>
what is the ratio of gases in air
what is the ratio of gases in air
approximately 78 % nitrogen , 21 % oxygen , and 1 %
approximately 78 % nitrogen , 21 % oxygen , and 1 %