During the process of ‘rusting’ , the weight of iron _______

Label each of the following as either a physical process or a chemical process: (a) rusting of a metal can, (b) boiling a cup of water, (c) pulverizing an aspirin, (d) digesting a candy bar, (e) exploding of nitroglycerin.

I have an anode which is iron. I have know:-The actual atomic weight of iron-Mass gained of iron after hte process-Moles calculated from the current used-Moles of electrons-Moles of the metal From these how do I calculate the calculated atomic weight?

I have an anode which is iron. I have know: -The actual atomic weight of iron -Mass gained of iron after hte process -Moles calculated from the current used -Moles of electrons -Moles of the metal From these how do I calculate the calculated atomic weight?