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ChemistryAcids and Bases I
Whether maintaining water quality in a fish tank or suffering from acid indigestion, we encounter...
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Scientists and ResearchFranklin Chang Díaz
Franklin Chang Díaz, the first Latin American to travel to space, ties the record for...
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ChemistryThe Periodic Table of Elements II
This module traces the history of the periodic table of the elements. In the mid-1800s,...
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