Pure oxygen is prepared by thermal decomposition of KClO3 according to the equation: Calculate the volume of oxygen gas liberated at STP by heating 12.25g KClO3(g) [Atomic mass of K=39, Cl =35.5 and O =16]
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In the simplest terms, a light-emitting diode (LED) is a semiconductor device that emits light when an electric current is passed through it. Light is produced when the particles that carry the current (known as electrons and holes) combine together within the semiconductor material.
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