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Calculate the molar mass of aluminium oxide
The molar mass of any substance is the sum of its atomic weight divided by its molecular weight. This can be calculated by using a formula weight or simply dividing the number of atoms in a substance by the number of moles.
Typically, a formula weight is obtained by multiplying each element in the chemical formula by its atomic weight and then adding these products together. However, if the chemical formula is not available, students can use Avogadro's number as an approximation.
Aluminium Oxide (Al2O3)
Aluminum oxide, Al2O3, is a white, colourless, odorless and insoluble compound. It is found naturally in a variety of minerals including corundum, rubies, sapphires and emeralds.
It is a strong but light material, and it has many uses in the industrial and medical worlds. It is frequently used as a material in bulletproof windows and body armours, for example.
The name aluminium oxide is derived from the Latin word alumina, meaning "astringent." This is because it has strong bonds between its atoms, making it abrasive in most applications.
In a chemical reaction, two aluminium atoms bond with two oxygen atoms to form the structure of this compound. During the process, aluminium loses three electrons, and oxygen gains two.
This molecule is primarily found in crystalline form, known as corundum. It is a popular abrasive in cutting tools and is also used as a ceramic filler in plastics. It is also a common ingredient in some cosmetics, such as lipstick and blush.
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