Paper Clips Investigation

I have always seen paper clips as a useful material. I believe that paper clips are a part of my culture due to the 7 m high statue of paper clips situated in my home-country Norway. During World War II the statue symbolized Norwegian nationalism, and it was due to John Vaaler the man who invented paper clips that the statue is in Norway today.
Paper clips are made from galvanized steel wire, meaning that the iron content is less than 100% because it also contains zinc. The galvanization method the paper clips are exposed to, are in most cases hot-dip galvanized; which is when the iron is coated with a thin zinc layer. The paper clip is passed through a molten bath of zinz at around 460°C. Afterwards, when the zinc (Zn) reacts with oxygen (O2) due to explosion to the atmosphere it forms zinc oxide (ZnO). The zinc oxide will then react with carbon dioxide (CO2) forming zinc carbonate (ZnCO3). Zinc carbonate is a strong material that stops oxidization and protects the iron underneath it from other elements.
Research question
What I I want to find out during this experiment is what the iron content in a paper clip is.
Hypothesis
I want to find the percentage of iron in a paper clip, which I will find if I have the mass of iron in the paper clip and the mass of the paper clip. I know that a paper clip cannot contain as
To make the solution acidic I added sulfuric acid (H2SO4) to the potassium manganite solution. Potassium manganate (VII) solution is used as a standard solution for oxidation and during redox titration. Potassium manganate(VII) is a self-indicator so other indicators are not required. The manganite is reduced from +VII in MnO4- to +II in Mn2+. The sulfuric acid (H2SO4) reacts with the paper clip. By heating up the sulfuric acid the paper clip dissolves, and iron (II) ions are oxidized to iron (III) ions by potassium manganate (VII). When the solution is dilute it appears