QUESTION 15

for each molecular formula, provide the calculated degrees of unsaturation, and two constitutional isomers for each formula.        \n 

1. Naphthalene, a hydrocarbon, has an approximate molar mass of 128 g/mole. If the combustion of 0.6400 g naphthalene produces 0.3599 g H₂O and 2.1977 g CO₂, what is the molecular formula of this compound?

   		C10H8
   		C9H18
   		C11H7
   		C8H32
   		C9H20