Chemistry 150
Phoenix University
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Exam (elaborations)
Chemistry 4: Stoichiometry of Chemical Reactions Solutions.
Chemistry 4: Stoichiometry of Chemical Reactions Solutions. 4.1: Writing and Balancing Chemical Equations 
1. What does it mean to say an equation is balanced? Why is it important for an equation to be 
balanced? 
Solution 
An equation is balanced when the same number of each element is represented on the reactant 
and product sides. Equations must be balanced to accurately reflect the law of conservation of 
matter. 
2. Consider molecular, complete ionic, and net ionic equations. 
(a) What is t...