On heating, potassium chlorate ( KClO3 ) decomposes to yield potassium chloride and oxygen gas. In one experiment, a student heated 20.4 g of KClO3 until the decomposition was complete. Write a balanced equation for the reaction. Both potassium compounds are in solid state.  Calculate the volume of oxygen (in liters) if it was collected at 0.962 atm and 18.3°C.  Is potassium chloride soluble in water? Just say Yes or No.

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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.