An estrogen compound with the empirical formula C₁₂H₁₇O₂ has a molecular mass of 386.6 g/mol.What is the value of n necessary to find the molecular formula?

Question

Quizplus · Accepted Answer

To find the molecular formula, we need to determine the value of n, which represents the number of empirical formula units present in the molecule. We can do this by dividing the molecular mass by the empirical formula mass. The empirical formula mass can be calculated by adding up the atomic masses of the elements in the empirical formula: C + _{12 +} + H + _{17 +} + O + _{2 +} = 12.011 + 32.066 + 1.008 + 32.066 + 1.008 + 15.999 + 32.066 + 15.999 + 12.011 + 15.999 = 167.235 g/mol Dividing the molecular mass (386.6 g/mol) by the empirical formula mass (167.235 g/mol) gives a value of approximately 2.31. Since n must be a whole number, the closest value to 2.31 is 2. Therefore, the molecular formula is (C₁₂H₁₇O₂)2 or C2S2U2B224H2O2.

An Estrogen Compound with the Empirical Formula C12H17O2 Has a Molecular

An Estrogen Compound with the Empirical Formula C₁₂H₁₇O₂ Has a Molecular