The empirical formula is a simple representation of the smallest whole number ratio of elements in a compound. Calculating the empirical formula can seem daunting, but with a step-by-step approach, it ...

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You can work out the molecular formula from the empirical formula, if you know the relative mass formula (M r) of the compound. Add up the atomic masses of the atoms in the empirical formula. The ...

\({\%~of~an~element} = \frac{mass~of~an~element~in~the~compound}{relative~formula~mass~M_r} \times 100\) There are six atoms of hydrogen in the compound, so the mass ...