Slide 1Stoichiometry © 2009, Prentice-Hall, Inc. Lecture 0302 Molecular Wt. % Composition and Elemental Analysis John D. Bookstaver St. Charles Community College Cottleville,…

Slide 1Stoichiometry Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations John D. Bookstaver St. Charles Community College St. Peters, MO 2006, Prentice-Hall…

Slide 1What does the little number below each Element mean? What are its units? amu/atom Slide 2 What is an amu one amu is defined as 1/12 th of 12 C Slide 3 Average atomic…

Slide 1 Mathematics of Chemical Formulas Slide 2 Formula Weights Slide 3 Formula Weight (FW) Sum of the atomic weights for the atoms in a chemical formula So, the formula…

EMPIRICAL FORMULA Is the simplest whole-number ratio of atoms of each element present in a compound For example, the empirical formula of C3H6 is CH2. If the mass of each…

CnHm + (n+ )O2(g) n CO2(g) + H2O(g) m 2 m 2 Fig. 3.4 Ascorbic acid ( Vitamin C ) - I contains only C , H , and O Upon combustion in excess oxygen, a 6.49 mg sample yielded…

Slide 1 C n H m + (n+ )O 2(g) n CO 2(g) + H 2 O (g) m 2 m 2 Fig. 3.4 Slide 2 Ascorbic acid ( Vitamin C ) - I contains only C, H, and O Upon combustion in excess oxygen, a…