A gas mixture contains 14.4 mol of NO and 6.25 mol of Br2.(a) Compute the mole fraction of NO in the mixture. (b) The mixture is then allowed to stand, and the NO starts to react with the Br2 to give NOBr: 2NO(g) + Br2(g) ----> 2NOBr(g) At a certain point in the reaction, 2.50 mol of NOBr is present. Determine the mole fraction of NO in the new mixture.

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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.