While ethanol (CH3CH2OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is synthesized by reacting ethylene (CH2CH2) with water vapor at elevated temperatures.  A chemical engineer studying this reaction fills a 500. mL flask with 4.6atm of ethylene gas and 4.2atm of water vapor. When the mixture has come to equilibrium he determines that it contains 2.7atm of ethylene gas and 2.3atm of water vapor.  The engineer then adds another 1.5atm of ethylene, and allows the mixture to come to equilibrium again. Calculate the pressure of ethanol after equilibrium is reached the second time. Round your answer to 2 significant digits.

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