4. A 1.0-L sample of an unknown gas effuses in 3.77 min. A 1.0-L sample of nitrogen gas in the same apparatus under the same conditions effuses in 2.18 min. What is the molar mass of the unknown gas? If you were told the unknown gas was a noble gas, what gas would it be? [83.8 g/mol]

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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.