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ChemistryThe Mole and Atomic Mass
The mole is an important concept for talking about a very large number of things...
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General ScienceThe Metric System
The metric system is the standard system of measurement in science. This module describes the...
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Scientists and ResearchAtmospheric Chemistry Research that Changed Global Policy
This module traces the life and scientific research of Mario Molina, the first Mexican-born chemist...
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