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# 1: Conservation of Mass

[ "article:topic-guide", "authorname:crowellb" ]

It took just a moment for that head to fall, but a hundred years might not produce another like it. -- Joseph-Louis Lagrange, referring to the execution of Lavoisier on May 8, 1794

### Contributors

Benjamin Crowell (Fullerton College). Conceptual Physics is copyrighted with a CC-BY-SA license.