When it is treated with sodium ethoxide in deuterated ethanol (C2H5OD), 1,3-cyclopentadiene exchanges all of its hydrogens for deuterium. Draw a structure for the reactive intermediate that forms in this reaction in its hydrogen form.

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).