State the 4 methods to calculate no. of moles.
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State the 3 things that is need to calculate % by mass of a part.
(1) mass of part (2) no. of part (3) mass of whole
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Define molecular & empirical mass.
molecular mass | shows actual no. of atoms of each element in substance
empirical mass | simplest ratio of atoms of each element in substance
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Draw the table for determining empirical formula from mass data.
molecular mass | shows actual no. of atoms of each element in substance
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