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Analysis of a volatile liquid showed that it is 68.2% carbon, 13.6% hydrogen, and 18.2% oxygen by mass. A separate 0.551 gram sample of its

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Analysis of a volatile liquid showed that it is 68.2% carbon, 13.6% hydrogen, and 18.2% oxygen by mass. A separate 0.551 gram sample of its vapor occupied 90mL at 77C and 2.00atm. What is the molecular formula for the compound? C2H4O C3H6O2 C6H12O4 C4H8O2 C5H12O

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