3 chemistry assignments due in 48 hours

Empirical Formulas Practice

Show all of the problem-solving steps to determine the empirical formula of each compound shown below, according to the problem setup provided in the lesson. Handwrite the work for each problem. Upload as a single file.

1) Determine the empirical formula of ethyl acetate, which has a percent composition of: 48.64 % C, 8.16 % H, 43.20 % O.

2) Determine the empirical formula of a sample of the mineral ilmenite, which contains, 5.41 g Fe, 4.64 g Ti, and 4.65 g O.

3) Determine the empirical formula for a compound which contains 32.8% chromium and 67.2% chlorine.

4) What is the empirical formula for a compound which contains 67.1% zinc and the remainder is oxygen?

5) A 175.0 g sample contains 56.15 g C, 9.43 g H, 74.81 g O, 13.11 g N, and 21.49 g Na. Determine the compound’s empirical formula.