Asked by jessie

The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 27.6 g of the compound?
Answered by Samuel
Mass=moles/atomic mass of fe2o3
Answered by DrBob222
mols Fe2O3 = grams Fe2O3/molar mass Fe2O3

Then there are 2 mols Fe for every 1 mol Fe2O3.