Solve   a. Find the empirical formula of a compound containing 36.89 %C, 13.96 %H, and 49.15 %O.        b. Find the molecular formula for the compound with a molar mass of 260.44g/mole. c.  Calculate the mass percent of each element in the following chemical formula: C4H11O3N2

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A: Hence open d is correct that is C3O2

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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.