An empirical formula represents the simplest whole-number ratio of atoms of each element in a molecule. An empirical formula is the relative number of atoms a molecule has. Unit 6 Molecular And Empirical Formula Sheet Chemistry Classroom Chemistry Lessons Chemistry 101 An empirical formula and a molecular formula are two different ways of stating the chemical formula of a molecule. . An empirical formula represents the simplest whole-number ratio of various atoms present in a compound. Molecular formulas tell you how many atoms of each constituent are in a compound and empirical formulas tell you the simplest or most summary ratio of elements in a compound. OK eso reduced fractions or things that are at their sort of lowest common denominator. Number of gram atoms of carbon 6544 g 12 gmol -1 545. Empirical formula of a chemical compound shows the simplest positive integer ratio of atoms of each element present in a compoun