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Chemistry Calculations

Last updated

Aug 10, 2020
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- Valence and the Periodic Table
- Chemical Equations

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Topic hierarchy

Chemical Equations
Dimensional Analysis
Dimensional analysis means thinking about units piece by piece. Dimensional analysis can by to correctly go between different types of units, to catch mistakes in one's calculations, and to make many useful calculations in real life. Essentially, dimensional analysis means multiplying by one. You collect a set of "conversion factors" or ratios that equal one, and then multiply a quantity that you are interested in by those "ones."
Molarity
Moles
Significant Figures
Significant figures, often called sig figs, are the number of digits in a given value, or number. For instance, 18 has 2 sig figs, and 3.456 has 4 sig figs. However, both 10 and 1000 have only 1 sig fig. The reason is because the zeros have to be there to show what the number is, so they don't count as significant digits.
Stoichiometry
Titrations
A titration is a laboratory technique used to precisely measure molar concentration of an unknown solution using a known solution. The basic process involves adding a standard solution of one reagent to a known amount of the unknown solution of a different reagent.

Contributors and Attributions

Emily V Eames (City College of San Francisco)

Contributors and Attributions

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