The plot below shows the distribution of molecular velocities for two gases (A and B) at the same temperature. Which of the following statements about these gases is TRUE? Recall that a "particle" can be an atom or a molecule. A Molecular Velocity 1200 200 400 600 800 1000 A. The particles in gas A have a lower average kinetic energy (KEavg) than the particles in gas B B. Gas A has a higher molar mass than gas B C. Gas A diffuses/effuses more slowly than gas B Both B and C O All of A, B, and C O B only OC only OA only Fraction of Molecules B.

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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.