Recent posts about Pontotoc, Mississippi on our local forum with over 2,000,000 registered users. Pontotoc is mentioned 127 times on our forum: Latest news from Pontotoc, MS collected exclusively by city-data.com from local newspapers, TV, and radio stations. Ancestries: American (22.5%), English (8.8%), Irish (5.2%), French (4.0%), Pennsylvania German (3.5%), European (1.5%).
Mods. Empirical Formula of an Oxide of Tin. Purpose: Within completing this lab, it was intended for the experimenter (student) to determine the empirical formula of an oxide of Tin by means of experimenting. This goal would be accomplished by finding the masses of the various substances experimented with, which 30 mesh tin, Tin Oxide, and Oxygen.
1 Empirical formula is a comparison of the number of moles of a compound so you need your values in moles. 2  Using the oxygen example again, there are 16.0 grams per mole of oxygen so 40 grams of oxygen would be 40/16 = 2.5 moles of oxygen.