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a relative measure of the mass contribution of each component in a compound. The percentage composition of a part of a compound is the percentage mass that the part contributes to the whole compound.
the number of protons in the nucleus of an atom, which determines which element it is. In a...
mass per unit volume of a substance. The number of molecules in a particular area or a measure...
the plastics converter industry uses polymers to manufacture useful everyday objects.
bonds that form between the hydrogen atom of one molecule and an oxygen, nitrogen or fluorine...