The full step-by-step solution to problem: 9.1.69 from chapter: 9 was answered by Patricia, our top Chemistry solution expert on 01/04/18, 09:13PM. This textbook survival guide was created for the textbook: Modern Chemistry: Student Edition 2012, edition: 1. This full solution covers the following key subjects: . This expansive textbook survival guide covers 98 chapters, and 1789 solutions. Modern Chemistry: Student Edition 2012 was written by Patricia and is associated to the ISBN: 9780547586632. Since the solution to 9.1.69 from 9 chapter was answered, more than 229 students have viewed the full step-by-step answer. The answer to “Why is a balanced equation necessary to solve a mass-mass stoichiometry problem? 1” is broken down into a number of easy to follow steps, and 13 words.