What do ethane and ethylene have in common? Organic Chemistry 1 Answer anor277 Jul 16, 2016 A two carbon backbone. Explanation: Ethylene, #H_2C=CH_2#, has one degree of unsaturation compared to saturated ethane, #H_3C-CH_3#. Of course, whatever the degree of saturation, both molecules are built on a 2 carbon skeleton. Answer link Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2? What is the lewis structure for hcn? How is vsepr used to classify molecules? What are the units used for the ideal gas law? How does Charle's law relate to breathing? What is the ideal gas law constant? How do you calculate the ideal gas law constant? How do you find density in the ideal gas law? Does ideal gas law apply to liquids? Impact of this question 1074 views around the world You can reuse this answer Creative Commons License