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Measurements/Unit Cancellation/Significant Figures 1. When
Measurements/Unit Cancellation/Significant Figures 1. When

... Empirical formula: A chemical formula that shows the lowest relative number of atoms of each element in a compound. Formula mass: The sum of the atomic masses (atomic weights in amu) of the atomic species as given in the formula of the compound Hydrate: A compound in which a specific number of water ...
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X-ray fluorescence



X-ray fluorescence (XRF) is the emission of characteristic ""secondary"" (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science and archaeology.
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