A 12.3 g sample of a compound known to consist of only carbon and hydrogen was found to be 14.40 % hydrogen, by mass. a)How many grams of carbon are present in the sample?    b)What is the empirical formula of the compound?   c)If the molar mass of the compound is 84.18 g/mol, what is the molecular formula of the compound?

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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.