ochemistry Oxidation of iron metal in the atmosphere is responsible for the formation c practice to prevent rust is to coat iron with another metal that is more easily reducing agent) than iron. Using the table of standard reduction potentials prc the following metals should iron be coated with in order to prevent rust? a. Pb(s) b. Cd(s) с. Cu(s) d. Zn(s) e. Ni(s)

9 4 12 19.4Ве + 2Hе — 6С+ le 2 1H 1 On 1H

You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in the sample containing Fe. Hemoglobin contains 3.83% by mass of a compound called heme (C₃₄H₃₂FeN₄O₄, MW = 616.49 g/mol). You find that your 11.5 mg blood sample contains 34.9 micrograms of Fe. What is the mass percent of hemoglobin in your protein sample?   -don't prematureley round