To calculate the corrosion rate of iron in a 0.1 M HCl solution, we need to follow these steps:1. Determine the surface area of the iron sample.2. Calculate the mass loss per unit area.3. Convert the mass loss per unit area to corrosion rate in terms of mils per year mpy or millimeters per year mm/yr .However, we don't have enough information to determine the surface area of the iron sample. If you can provide the dimensions of the iron sample, we can proceed with the calculation.