... definition:Weight fraction = weight of A /total weightMoles of A = weight of ,4/molecular weight of AMole fraction = moles of ,4/total molesFirst, calculate the weight fraction of each component:Compound ... at a rate of 10,000 lb/h in the presence of 20,000 lb/h of air. Due to the energy requirements of the unit, 1250 lb/h of a vapor conditioning agent is added to assist the treatment of the stream. ... basis:Rate of mass in — Rate of mass out + Rate of mass generated= Rate of mass accumulatedRewrite this equation subject to the conditions in the problem statement:Rate of mass in = Rate of mass...