To calculate the corrosion rate of iron Fe in a sea environment, we can use the following formula:Corrosion rate CR = Weight loss WL Equivalent weight EW K / Area A Time T Where:- Weight loss WL is the mass loss of the iron due to corrosion 5 grams in this case - Equivalent weight EW is the atomic weight of iron divided by the number of electrons lost during the corrosion process for iron, the atomic weight is 55.85 g/mol and it typically loses 2 electrons during corrosion, so EW = 55.85/2 = 27.925 g/equivalent - K is a constant to convert the units for the corrosion rate in mm/year, K = 3.27 10^6 mm^3/ gyearm^2 - Area A is the surface area of the iron exposed to the sea environment we need this value to proceed - Time T is the duration of the exposure 1 month, which is approximately 1/12 of a year or 0.0833 years To solve the problem, we need the surface area A of the iron exposed to the sea environment. If you provide this value, we can calculate the corrosion rate.