While ethanol (CH3CH2OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is...

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While ethanol (CH3CH2OH) is produced naturally by fermentation, e.g. in beer- and wine-making, industrially it is...

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 50.0 L tank at 21.0 C with 17 mol of ethylene gas and 15 mol of water vapor. He then raises the temperature considerably, and when the mixture has come to equilibrium determines that it contains 5.0 mol of ethylene gas and 3.0 mol of water vapor.

The engineer then adds another 3.8 mol of water, and allows the mixture to come to equilibrium again. Calculate the moles of ethanol after equilibrium is reached the second time. Round your answer to significant digits.

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