The empirical formula of a compound that has the following percent composition; 81.68% carbon and 18.32% hydrogen is C2H5.
The empirical formula is a notation indicating the ratios of the various elements present in a compound, without regard to the actual numbers.
The empirical formula of a compound that has 81.68% carbon and 18.32% hydrogen can be calculated as follows:
First, we convert mass to moles;
Next, we divide each mole value by the smallest (6.81mol)
We multiply each ratio by 5 to make an whole number:
Therefore, the empirical formula of a compound that has the following percent composition; 81.68% carbon and 18.32% hydrogen is C2H5.
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