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Chemistry Chapter 4 Notes

by: alb1081

Chemistry Chapter 4 Notes CH1213

Marketplace > Mississippi State University > Chemistry > CH1213 > Chemistry Chapter 4 Notes
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About this Document

These are the notes we covered in Snow's class over the beginning of Chapter 4. 9/16/16
Chemistry 1
Dr. Xiu Xu
Class Notes
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This 1 page Class Notes was uploaded by alb1081 on Friday September 16, 2016. The Class Notes belongs to CH1213 at Mississippi State University taught by Dr. Xiu Xu in Fall 2016. Since its upload, it has received 7 views. For similar materials see Chemistry 1 in Chemistry at Mississippi State University.


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Date Created: 09/16/16
I. Stoichiometry of Chemical Reactions A. Chemical Equations 1. Chemical equations use chemical symbols to denote what occurs in a chemical reaction. 2. Reactants are on the left side 3. Products are on the right side 4. Labels used = gas (g), liquid (l), solid (s), and aqueous (aq) a. Water is not aqueous, it is a liquid B. Balancing Equations 1. Must be balanced, so that the law of conservation of mass is obeyed 2. Balancing is achieved by writing stoichiometric coefficients to the left of the chemical formulas a. Not Balanced H2 (g) + O2 (g)  H2O (l) b. Balanced 2H2 (g) + O2 (g)  2H2O (l) 3. How to read chemical equations: a. 2Mg + O2  2 atoms Mg + 1 molecule O2 makes 2 formula units of MgO b. Or 2 moles of Mg + 1 mole of O2 makes 2 moles MgO c. Or 48.6 grams Mg + 32.0 g O2 makes 80.6 g MgO Example problems for balancing equations:


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