• Given Information #1: Benzene is a common additive to the tobacco mix. Benzene is a hydrocarbon, an organic compound when combusted produces H2O(g) and CO2(g).

  • Given Information #2: Benzene is a C6 RING.

  • Given Information #3: When the lab burned a cigarette from the packet they recovered, there was an unusual result: 54 moles of CO2 (g) were produced and an excess of 1.824 kg of oxygen gas disappeared!

  1. After breaking apart the tobacco mixture, scientists and forensic experts found substances that did not belong. Among them was a substance with a massive molecular composition. About 79.00% was carbon, about 10.7% hydrogen and about 10.00% oxygen. No other tests could be conducted since the lab used the only clean sample it had; when Ryan's body was moved, the samples were contaminated as it fell into water. What substance is it?

  2. If 40 moles of H2O (g) were created, would that confirm the substance you identified? If not, what is the correct formula? Why?

  3. If Dr. Melisa told you the molar mass of the substance was 318.482 grams, find the molecular formula.

*Hints:
  1. Know what the Law of Conservation of Mass
  2. Identify the type of reaction and predict its products
  3. Use stoichiometry:
    • aA + bB ---> cC + dD
    • cC + dD ---> aA + bB
  4. The benzene ring is a hexagon.
  5. Remember how to do empirical formula.