Molecular formula of the common or of aluminimum
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Aluminium forms one stable oxide with the chemical formula Al2O3. It can be found in nature in the mineralcorundum. Aluminium oxide is also commonly called alumina. Sapphire and ruby are impure corundum contaminated with trace amounts of other metals. The two oxide-hydroxides, AlO(OH), are boehmite and diaspore
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Divide the molar mass of the compound by the empirical formula mass. The result should be a whole number or very close to a whole number. Multiply all the subscripts in the empirical formulaby the whole number found in step 2. ... The molar mass of the molecular formula matches the molar mass of the compound.
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