Slide 1Timberlake LecturePLUS1 Chapter 9 Empirical Formulas Slide 2 Timberlake LecturePLUS2 Types of Formulas The formulas for compounds can be expressed as an empirical…
Slide 1 Molar Mass and Mole Calculation Problems Slide 2 Molar Mass You need to calculate molar mass if you have more than one atom in a problem. It’s easy… just add…
Slide 1 Chemical Composition Moles! Moles! Moles! Slide 2 Little Problem I have a sample of CO 2 that contains 3 moles oxygen, how many grams of carbon do I have? A. 18.0…
Slide 1 Why is Knowledge of Composition Important? Because everything in nature is either chemically or physically combined with other substances it is necessary to have…
Slide 1 Chemistry 10.3 “Percent Composition and Chemical Formulas” Slide 2 I. Percent Composition A. Def – the percent by mass of each element in a compound. 1. Must…