Answer:
1 ring
Explanation:
The molecular formula of a saturated alkane with 12 carbon atoms is [tex]C_{13}H_{32}[/tex] while that of a cyclic alkane with 12 carbon atoms is [tex]C_{13}H_{30}[/tex]. Thus, if six hydrogen atoms are removed from the compound, this would translate into a three double bonds. Therefore, the number of rings in the original compound would be one (1).
