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Amino acids
Nitrogenous bases for DNA and RNA (adenine, guanine, cytosine, thymine and uracil).
Carbohydrates (saccharides): aldoses and ketoses.
Genetic code, ...

Astronomical constants
Phases of the Moon
Eclipses, Equinoxes, Solstices, Perihelion, Aphelion...
Scientific constants
S.I. units, definitions and conversion factors,..

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Free educational resources

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Number of theoretical trays
by the McCabe-Thiele method.

New application for assistance
in the design of beams.

- Probability
- Two variables statistics
- Total Probability Law
- Bayes' Theorem.