Calculating an equilibrium composition after a prior equilibrium v "Synthesis gas\" is a mixture of carbon monoxide and water vapor. At high temperature synthesis gas will form carbon dioxide and hydrogen, and in fact this reaction is one of the ways hydrogen is made industrially, A chemical engineer studying this reaction fills a 75 L tank with 21. mol of carbon monoxide gas and 4.3 mol of water vapor. When the mixture has come to equilibrium he determines that it contains 18.8 mol of carbon monoxide gas, 2.1 mol of water vapor and 2.2 mol of carbon dioxide. The engineer then adds another 2.0 mol of water, and allows the mixture to come to equilibrium again. Calculate the mol of hydrogen after equilibrium is reached the second time. Round your answer to 2 significant digits. X 6 8