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Readings
Chemists often need to know what elements are present in a compound and in what percentage. The percent composition is the percent by mass of each element in a compound. Use this reading to learn how to calculate percent composition by mass
The process of calculating the percent water in a hydrate is described.
Videos
This chemistry video tutorial explains how to find the percent composition by mass of each element in a compound using a simple formula. You need to find the molar mass of the entire compound in order to calculate the mass percent of each element. This video contains plenty of examples and practice problems.
Empirical Formula of a Hydrate
This chemistry video tutorial focuses on Hydrates. It explains how to find the empirical formula of a hydrated ionic compound.
Practice Problems
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