1.600 g of aluminum sulfate sample was dissolved in water and aluminum was precipitated as Al(OH)3. The precipitate was filtered, dried and ignited to form Al2O3. The mass of aluminum oxide was found to be 0.400 g. Calculate the percentage of aluminum sulfate in the sample. (Al: 27, S: 32, O: 16 g/mol)

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.