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General chemistry
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General chemistry
Dialysis
Chemistry; General chemistry
Dialysis is the separation of components in a mixture by passing them across a semipermeable membrane .
Mass spectrum
Chemistry; General chemistry
A plot showing the results of a mass spectrometry experiment, which shows the presence of particles with different masses as a series of sharp, separate peaks. The position of the peaks on the ...
Standard pressure
Chemistry; General chemistry
Standard pressure is a pressure of 1 bar. Before 1982, the standard pressure was 1 atm (1 atm = 1.01325 bar).
Bond order
Chemistry; General chemistry
1. In Lewis structures, the number of electron pairs shared by two atoms. 2. In molecular orbital theory, the net number of electron pairs in bonding orbitals (calculated as half the difference ...
Hydrate
Chemistry; General chemistry
A hydrate is an addition compound that contains water in weak chemical combination with another compound. For example, crystals of CuSO4•5 H2O (copper sulphate pentahydrate) are made of regularly ...
Polyatomic molecule
Chemistry; General chemistry
A polyatomic molecule is an uncharged particle that contains more than two atoms.
