3.3 Mass Percents and Empirical and Molecular Formulas
|Mass Percent||Molecular Formula||Most reduced integer ratio of atoms in a compound|
|Empirical Formula||Ratio of the actual number of atoms per molecule of a compound. It is either the same or a multiple of the empirical formula.|
You have 300g of CaCO3. What is the percentage of carbon in the sample? What is the %O?
A certain compound is 80.0% carbon and 20.0% hydrogen by mass. What is its empirical formula? If the compound above has a molecular weight of 30a.m.u., what is its molecular formula?