rank the 4 gases (air,exhaled air, gas produced from decomposition of H202, gas from decomposition of NaHCO3) in order of increasing concentration of oxygen
Air has about 21% oxygen Exhaled air has about 16% oxygen The gas produced from decomposition of H₂O₂ is pure oxygen The gas produced from decomposition of NaHCO₃ is pure carbon dioxide Thus, the order is: 1) Gas produced from decomposition of H₂O₂ 2) Air 3) Exhaled air 4) Gas produced from decomposition of NaHCO₃
