Molecular and Empirical Formulas & Theoretical and Actual Yeild

chemical formulas that show the actual elemental symbols and numbers of the atoms in a molecule

formula that gives the most reduced whole number ratio of each atom in a chemical formula

tells you how much of one atom a molecule is made of -must know molecular weight and the atom in questions weight, divide them and multiply by 100

1) given a molecule’f formula and asked for a specific elements percent 2) given the mass percent of each element, and have to determine the molecules formula

Bc when we analyze an unknown sample the machine doesn’t give us a formula. It gives us a list of elements and their percentage present in the sample. We can convert those %s into an empirical formula, and later use mass spectrometry to help convert it into a molecular formula

the reactant that runs out first, the amount of product you can get in a reaction is dependent on the limiting reagent

the amount of product you SHOULD get in a given reaction (if everything goes perfect). This is what you would calculate to obtain

identify the limiting reactant and then calculate

the amount of product that you actually get when you run an experiment. You will measure this

% yield = actual/theoretical x 100

% yield = actual/theoretical x 100 % error = (actual-theoretical)/theoretical x 100