Empirical and Molecular Formula Practice Solutions, Exercises of Chemistry

Download Empirical and Molecular Formula Practice Solutions and more Exercises Chemistry in PDF only on Docsity! Empirical and Molecular Formula Practice Solutions 1. A compound is found to contain 63.52 % iron and 36.48% sulfur. Find its empirical formula. 2. A compound is found to contain 26.56% potassium, 35.41% chromium, and the remainder oxygen. Find its empirical formula. 3. A 60.00 g sample of tetraethyllead, a gasoline additive, is found to contain 38.43 g lead, 17.83 g carbon, and 3.74 g hydrogen. Find its empirical formula. Empirical and Molecular Formula Practice Solutions 4. A 170.00 g sample of an unidentified compound contains 29.84 g sodium, 67.49 g chromium, and 72.67 g oxygen. Find the empirical formula. 5. Determine the molecular formula of the compound with an empirical formula of CH and a formula mass of 78.110 u. 6. Determine the molecular formula of a compound with an empirical formula of NH2 and a formula mass of 32.06 u.