The amount of energy released by the combustion of a given fuel is the result of the subtracting the energy required to break the bonds of the reactants from the energy released by the formation of bonds in the products.
Kansas Nebraska Act. This Act set up Kansas and Nebraska as states. Each state would use popular sovereignty to decide what to do about slavery. People who were pro-slavery and antislavery moved to Kansas, but some antislavery settlers were against the Act.
In order for the Kansas-Nebraska Act to be effective, it was necessary to repeal the Missouri Compromise and its boundary restrictions on the territorial extension of slavery. The new act was opposed by antislavery forces and subject to bitter dispute in Congress.