You need to find the caps key and use it. fe isn't anything. CO, Co, co have different meanings.
Rust is one of those complicated formulas. If we assume the formula is Fe2O3.
mols Fe2O3 = 30/molar mass Fe2O3 = ?
Then 2 x that = mols Fe.
how many moles of fe are present in 30g of rust?
4 answers
i dont get it
Not understandable
divide the given number by molecular mass of rust and then multilply by two