1 a) The product of combustion of methane in atmospheric air (21%O_(2):} and 79%N_(2) ) have the following composition in mol% on a dry basis is: CO_(2)-10quadO_(2)-2.37quadCO=0.53quadN_(2)-87.1. Calculate the molar ratio of the moles of CH_(4) to the moles of O_(2) in the feed. b) Methane and steam are fed to area ctorinmolar ratio1:2.The following reactions take place, CH_(4)(g)+2H_(2)O(g)rarrCO_(2)(g)+4H_(2)(g) and CH_(4)+H_(2)O=CO+2H_(2) where, CO_(2) isthedesiredproduct, COistheundesired productand H_(2) isabyproduct.Theexitstreamhasthefollowingcomposition: Species: CH_(4) H_(2)O CO_(2) H_(2) CO Mol%: 4.35 10.88 15.21 67.39 2.17 Calculate (a) The selectivity (b) The fractional yield of CO_(2) (C) The fractional conversion of methane. (d) The limiting r