1. The electrolysis of water into gaseous oxygen and hydrogen is a typical example. 2. In an anaerobic system there is an absence of gaseous oxygen . 3. Gaseous oxygen is excluded from the reactions by physical containment.4. The discovery of gaseous oxygen on Europa was made by scientists using the Hubble Space Telescope. 5. These systems, designated for indoor operation, are set to effectively produce gaseous oxygen from atmospheric air. 6. One of the liquid oxygen tank umbilical valves is for liquid oxygen, the other for gaseous oxygen . 7. The earth losses gaseous oxygen all the time because it can get enough kinetic energy to escape. 8. In an aerobic system, such as composting, the microorganisms access free, gaseous oxygen directly from the surrounding atmosphere. 9. In an anaerobic digester, gaseous oxygen is prevented from entering the system through physical containment in sealed tanks. 10. This reduces accumulation of gaseous oxygen in the feed line during prelaunch tanking ( loading of the LOX ). 
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