When sodium chlorate (NaClO3) is heated, it decomposes into sodium chloride andoxygen gas. A student heats a sample of sodium chlorate and the collected gasoccupies 400.0 mL at a temperature of 25 C and a pressure of 0.931 atm. How many mL would the oxygen gas occupy at STP?

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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.