Consider the following pentene isomers and their heats of hydrogenation. A more negative heat of hydrogenation means that the reaction released more heat. This means that the original molecule was more energetic to start with. Compound 1-Pentene Z-pent-2-ene E-pent-2-ene 2-methyl-but-1-ene 3-methyl-but-1-ene 2-methyl-but-2-ene Heat of Hydrogenation (kcal/mol) -30.000+ 0.400 -28.491 +0.201 -27.410 +0.201 -28.240 + 0.182 -29.935 + 0.082 -26.745 + 0.082 Explain for these trends