Relative atomic mass (formerly atomic weight): a dimensionless physical quantity, the ratio of the average mass of atoms of an element to 1/12 of the mass of an atom of carbon-12 (unified atomic mass unit); 2 samples of a chemical element naturally found as being composed of more than one isotope collected from 2 different sources are expected to have slightly different relative atomic masses because isotopic concentrations typically vary slightly with the history of the source
How do you calculate the mass of an atom? A seemingly simple question with a not-so-simple answer. This lesson is appropriate for AP Chemistry or Honors Introductory Chemistry. Detailed answer keys are included. The topics covered include a review of the structure of the atom, atomic mass units, mass spectrometers, calculating atomic mass, and calculating percent abundances.
Behold: the Ulta-High Performance Liquid Chromatograph/Quadruple-Time of Flight Mass Spectrometer (LC/MS or QTOF). Capable of differentiating between masses to 0.0001 atomic mass units!! . Time to kick some mass... #science #scientist #massspectrometry #chemistry #instrument #talknerdytome #nerd #cool #technology #scientific #insane #hightech by chemistryofjazz