Essential Chemistry for IGCSE - Chemical Calculations (Section 2 - No. 36)
Which of the following statements is true about an empirical formula?
It always matches the molecular formula.
It represents the simplest whole-number ratio of atoms in a compound.
It can only be determined for ionic compounds.
It is used for calculating the percentage by mass of an element in a compound.
Explanation
The empirical formula expresses the simplest whole-number ratio of elements.
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