A formula unit for aluminum is a single atom, while a molecule of aluminum oxide has the formula Al2O3. Therefore, one mole of aluminum provides enough aluminum atoms for only one-half mole of aluminum oxide.
The formula for aluminum oxide is Al2O3, which means that, if aluminum oxide is ionically bonded, every formula mass of aluminum oxide contains three O-2 ions. In this instance, 0.65 formula masses of aluminum oxide would contain 3 X 0.65… Full Answer
One is oxidized aluminum and the other is oxidized iron. Iron oxide is magnetic. Aluminum oxide is not. Most of the clear semi precious gems like rubies and emeralds are made from aluminum oxide. Iron oxide is in hematite the… Full Answer
Melting point of aluminum is 600 C but it must be note aluminum oxide coated over aluminum had melting point of 2,072 C. It is not easy to melt aluminum because of these oxide coating. Application of aluminum as kitchen… Full Answer
In solid state, Aluminium and oxide ions are immobile. When aluminum oxide is melt down,aluminum and oxide ions become free and they can easily migrate to respecve electrodes. Therefore, aluminum oxide is electrolysed in molten state.