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General chemistry
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General chemistry
Isobar
Chemistry; General chemistry
1. A contour line that corresponds to values measured at identical pressures. For example, curves on a plot of gas volumes measured at different temperatures in an open container are isobars. 2. ...
Resonance
Chemistry; General chemistry
Description of the ground state of a molecule with delocalized electrons as an average of several Lewis structures. The actual ground state doesn't switch rapidly between the separate structures: it ...
Avogadro
Chemistry; General chemistry
Italian chemist and physicist Amadeo Avogadro (1776-1856) proposed a correct molecular explanation for Gay-Lussac's law of combining volumes . His work provided a simple way to determine atomic ...
Avogadro number
Chemistry; General chemistry
The number of particles in one mole, equal to 6.02214199 × 1023 mol-1 (± 0.00000047 mol-1) (1998 CODATA values)
Avogadro's law
Chemistry; General chemistry
Equal volumes of an ideal gas contain equal numbers of molecules, if both volumes are at the same temperature and pressure. For example, 1 L of ideal gas contains twice as many molecules as 0.5 L of ...
Balmer series
Chemistry; General chemistry
A series of lines in the emission spectrum of hydrogen that involve transitions to the n=2 state from states with n>2.
Bohr atom
Chemistry; General chemistry
A model of the atom that explains emission and absorption of radiation as transitions between stationary electronic states in which the electron orbits the nucleus at a definite distance. The Bohr ...
