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Ethylene oxide (C2H4O) is made by the catalytic reaction between ethylene (C2H4) and oxygen.Fresh ethylene, pure oxygen, and recycled ethylene are mixed to give a reactor feed gas containing 55%C2H4 which enters the reactor at 1 atm absolute and 300 oC. From test experiments, the single-pass conversion of ethylene in the reactor is 54% and, of this, 72% goes to ethylene oxide and the balance decomposes to CO2 and H2O. Most of the unreacted ethylene is separated from the reactor exit stream and is recycled, a pure ethylene oxide product stream is produced, and the remaining materials leave in a waste stream which analyses 9.0% ethylene. The production rate of ethylene oxide is 26,430 kg/day.Determine: a) the molar flow rate of fresh ethylene feed; b) the flow rate of the recycle stream; c) the fraction of feed oxygen wasted; and d) the percent excess oxygen