Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 4 - Energy and Chemical Reactions - Questions for Review and Thought - Review Questions - Page 189a: 2d

Answer

The answer is below.

Work Step by Step

The system is the two chemicals, for this is what is being observed. The surroundings is everything that the heat is transferred to/from. While this is technically the rest of the universe, we can approximate it to be the flask.
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