A i r o x y g e n c o n t e n t = 1.2041 k g m 3 × 23 % = 0.2769 k g m 3 {\displaystyle Air\ oxygen\ content=1.2041\ {\frac {kg}{m^{3}}}\times 23\%=0.2769\ {\frac {kg}{m^{3}}}}