A reaction mixture for an enzyme assay has a final volume of 0.210 mL in the buffer 0.030 M tris (hydroxymethane)aminomethane), 4.0 mM ethylenediaminetetraacetic acid, 0.4 mM beta-mercaptoethanol, and 0.48 mM putrescine. How many micromoles of each individual reaction ingredient is there in this mixture?