Slide 14S1 Monday, 14/2/2011 10.45 – 11.55 am Slide 2 Previously… Slide 3 Relationship of Number of Particles and Number of Moles Number of moles = Number of particles…

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Slide 1 Slide 2 8/1/20151 Chapter 3 Stoichiometry 3.1 Atomic Masses 3.2 The Mole 3.3 Molar Mass 3.4 Percent Composition of Compounds 3.5 Determining the Formula of a Compound…

Slide 1 Percent Composition, Empirical Formulas, Molecular Formulas Slide 2 Percent Composition Percent Composition – the percentage by mass of each element in a compound…

Slide 1 Slide 2 Slide 3 3.2 The Mole - Central Unit of Chemistry Slide 4 Introduction to the Mole Slide 5 Slide 6 Slide 7 Why is it useful to use units like a dozen or a…

Slide 1 CHAPTER 3B Stoichiometry Slide 2 Counting Atoms Amu – atomic mass unit 1 amu = 1.66 x 10 -24 g Ex. 1 carbon atom = 12 amu 1 Fe atom = 55.85 amu 1 Na atom = ???…

Slide 1 PERCENT COMPOSITION Slide 2 2 3 Steps for Determining Chemical Formulas 1. Determine the percent composition of all elements. 2. Convert this information into an…

Slide 1 Slide 2 Dimensional Analysis Conversion factors Units Cancel to solve Slide 3 Counting Atoms Mg burns in air (O 2 ) to produce white magnesium oxide, MgO. How can…

Slide 1 Chapter 4 Chemical Quantities and Aqueous Reactions 2008, Prentice Hall Chemistry: A Molecular Approach, 1 st Ed. Nivaldo Tro Roy Kennedy Massachusetts Bay Community…

Slide 1 Chapter 9 Stoichiometry Review Slide 2 Vocabulary composition stoichiometry reaction stoichiometry mole ratio limiting reactant excess reactant percent yield actual…