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6,02 x 1023 particles or objects. Also known as the number of particles in one mole.
large deposits formed from the excrement and bodies of seabirds. Often found on islands.
(also called or polypropylene) colourless transparent thermoplastic used where a flexible...
study of hydrocarbons and other organic compounds.
22,4 x 10-3 m3 or 22,4 dm3 at S.T.P.
the use of an electric current to cause chemical change in a liquid.