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Use a sweep through purge to reduce the oxygen concentration from 100% air (21% oxygen) to 1.25% oxygen. The vessel has a volume of 7500

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Use a sweep through purge to reduce the oxygen concentration from 100% air (21% oxygen) to 1.25% oxygen. The vessel has a volume of 7500 gallons. Determine the ft3 of nitrogen required if the nitrogen contains 0.01% oxygen. Repeat this problem with nitrogen containing 0.02% oxygen and 0.05% oxygen. 1

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