The empirical formula of cinnamaldehyde is determined to be [tex]C_{9}H_{8}O[/tex]
The empirical formula is the formula used to know the relative ratios of atoms in a compound. These ratios hold true on the molar level as well.
As there were 0.036410 moles of carbon, 0.03236 moles of hydrogen, and 0.00404 moles of oxygen. We can determine the empirical formula in this case by dividing each mole value by the smallest given number of moles which in this case is of oxygen (0.00404 moles).
Carbon = 0.036410 ÷ 0.00404 = 9
Hydrogen = 0.03236 ÷ 0.00404 = 8
Oxygen = 0.00404 ÷ 0.00404 = 1
Therefore the empirical formula of cinnamaldehyde is [tex]C_{9}H_{8}O[/tex]
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