Air, containing 79 mol\% nitrogen (N2) and 21 mol\% oxygen (O2), is split into two product streams by a separator operating at steady state. One product stream is 98 mol\% O2 and contains 80% of the oxygen in the air fed to the separator. The other stream is mostly nitrogen. You must produce 1.542 ton/day of the enriched oxygen product stream. Solve for the unknowns in this process following the general strategy for approaching material balance problems. Some information in the problem statement is given in mass quantities (e.g. ton/day), and some is given in mole fractions (e.g. mol\%). Let's convert all the information we have to mass fractions, using a basis of 100gmol. Match the variables in the following table with their corresponding value: Now, pick the correct value from each dropdown that completes the auxiliary equation: "The product stream contains 80% of the oxygen in the air fed to the separator" AKA " (O2 in stream 2) =0.8(O2instream1) ton/ day =0.8