A nitrogen molecule at the surface of earth happens to have the rms speed for that gas at 0°C. If it were to go straight up without colliding with other molecules, how high would it rise ? Mass of nitrogen molecule, m = 4-65 x 10-26 kg, k = 1-38 x 10-23 J molecule-1 K-1.

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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.