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What is the mass % composition of melatonin, C13H16N202. A 100 mg sample of a compound containing C, H and O is analyzed. All the

  1. What is the mass % composition of melatonin, C13H16N202.
  2. A 100 mg sample of a compound containing C, H and O is analyzed. All the carbon is converted to CO2 with a mass of 176 mg of CO2. All of the hydrogen is converted to H2O with a mass of 36mg. Determine the empirical formula of the compound. What is the molecular formula if there are 8 carbon atoms per molecule? What is the molar mass?

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