Because you can calculate the composition given the formula, you should be able to work the other way around and get formulas from their compositions. That's what we worked on today.
Weights
Moles
Mole Ratio
Atom Ratio
Express as Formula
Students should review the example problems that we worked in class. We will continue this work in class on Monday.
HW: Spend 10 to 15 minutes reviewing problems; Senior Thesis!