Use the References to access important values if needed for this question. The rate of effusion of Kr gas through a porous barrier is observed to be 5.41 x 10 mol/h. Under the same conditions, the rate of effusion of Os gas would be mol/h.

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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.