((212mL)/((11.0g)act.))×((13.4   mg(Subscript[TMPO, 4]))/(0.500   mL))×(((248.30MW   st.)mat.)/((140.08MW)(Subscript[TMPO, 4])))×(9.617/270.392)×((100)/(1000))=(3.26%unreactedstartingmaterial)