Answer:
3rd option.
159.7g Fe2O3 / 1 mol Fe2O3
Explanation:
The correct way to write the molar mass of iron oxide as a conversion factor is illustrated below:
Mass of Fe2O3 = 159.7g
Number of mole = 1 mole
Molar Mass of Fe2O3 =?
Molar Mass = Mass /number of mole
Molar Mass =
159.7g Fe2O3 / 1 mol Fe2O3
