Final answer:
For determining which compound has a lower heat of hydrogenation, more alkene stability (indicated by substituents or trans-configuration) typically results in a lower heat of hydrogenation. Without specific compounds to compare, general trends suggest that alkenes that are more substituted or trans-configured will have a lower heat of hydrogenation.
Step-by-step explanation:
When comparing compounds' heats of hydrogenation, it's important to consider the stability of the alkene that is being hydrogenated. The heat of hydrogenation is an indicator of the alkene's stability; a lower heat of hydrogenation means a more stable alkene. Generally, the presence of substituents on the double bond, which can delocalize charge and distribute the energy in a stable manner, will lower the energy released upon hydrogenation. Additionally, trans fats, which are created in partial hydrogenation and have a different orientation around the double bond compared to cis fats, might exhibit varying levels of heat of hydrogenation due to differences in their molecular geometry and stability. Without the exact compounds in question, we cannot specify which compound has the lower heat of hydrogenation; however, an alkene with more substituents or the one with a trans configuration generally has a lower heat of hydrogenation than a less substituted or cis-configured alkene.