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6,02 x 1023 particles or objects. Also known as the number of particles in one mole.
the use of a catalyst to bring about the cracking of mineral oils that boil at high temperatures...
the ratio of actual yield to theoretical yield in a chemical reaction.
a collection of more than one pure substance in no fixed proportion.
a method of determining the concentration of an acid or base by neutralising it with a base or...
the phase change of a substance from the solid phase directly into the gas phase without passing...