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The composition of normal atmospheric air is N2 - 78%, O2 - 21% and other miscellaneous gasses make up the balance. SO,

Any O2 concentration greater than 22-23% would be O2 considered enriched.

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Q: An oxygen enriched atmosphere has an oxygen concentration greater than?
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Related questions

What are examples of an oxygen-enriched atmosphere?

a properly calibrated oxygen monitor reading 23.9% oxygen


What era did autotrophic prokaryotes enrich the atmosphere with oxygen?

autotrophic prokaryotes enriched the atmosphere with oxygen in the precambrian era :) hope this helps


What is an oxygen enriched environment?

Air is the mixture of gases that surrounds the Earth. The composition of the earth's atmosphere varies with altitude, but at sea level contains approximately 78% nitrogen and 21% oxygen by volume.An oxygen-deficient atmosphere contains less than 19.5% oxygen by volume.An oxygen-enriched atmosphere contains more than 23.5% oxygen by volume.


An oxygen deficient atmosphere has an oxygen concentration less than?

19.50%


Is oxygen decreasing?

There is no indication at present that the concentration of oxygen in the atmosphere is declining.


In an oxygen enriched atmosphere some possible sources of elevated oxygen levels include?

leaking oxygen cylinders and liquid oxygen systems in the immediate area


What is the concentration of oxygen in the earth's atmosphere?

Approximately 20%.


How long has the oxygen concentration of the atmosphere been at its current level?

The oxygen concentration in the atmosphere today (which is at about 21%) has been at its current level for the past 400 million years.


What are some events that happen during the precambrian era?

life arose and the atmosphere became enriched in oxygen


Can A monitoring device labeled intrinsically safe and explosion proof can be used in an oxygen enriched atmosphere?

yes


Oxygen debt in muscles may develop because of?

too high a concentration of oxygen in the atmosphere


Second most common element in the atmosphere?

Nitrogen has the highest i.e. 78% concentration in the atmosphere. On the second spot lies oxygen with a concentration of about 21%.