Fill in the blanks with the options given:
  
Answer variants:
\(CH_3(CH_2)_5CH_3\)
Ethane
Suffix
Carbon and hydrogen
\(CH_3(CH_2)_3CH_3\)
 
1. Hydrocarbons are organic compounds that are made up of ___________ and ___________ atoms.
 
2. __________ is the condensed structure of n- Heptane.