The decomposition of KClO3 is commonly used to prepare small amounts of O2 in the laboratory:                  KClO3 (s)           KCl (s) + O2 (g). How many grams of O2 can be prepared from 4.50 g of KClO3?

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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.