A 30,000 L vessel originally charged with air at ambient conditions (1 atm, 25 oC) is required to be purged to a 6 ppm oxygen concentration level prior to start of operation. If a combined vacuum pressure (vacuum-first) purging technique is employed using nitrogen as the inert gas, calculate the number of cycles required

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Q: Perform the conversions. 1.167 atm = Torr 931.7 mmHg atm Pa atm 1108.9 mmHg 979.1 kPa =

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