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A compound is composed of 54.6 % carbon, 9.0 % hydrogen and 71.1% oxygen by mass. A. Determine the empirical formula of that compound. B. A 2.20-g sample of that compound in a gaseous state occupies a volume of 1.00 L and exerts a pressure of 0.950 atm at 359 °C. Determine the molecular formula of that compound.