A mixture of carbon dioxide (M. Wt = 44) and an unknown gas was allowed to effuse from a container. The carbon dioxide took 0.83 times as long to escape as the unknown gas. What is the molecular wt. of the unknown gas? Select one: 28 71 17 64 REDMI NOTE 8 BY DEEMA MAHMOUD

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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.