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.
Stephen Douglas, a Democrat of Illinois, drafted the Kansas-Nebraska Act; it allowed the states in the North to decide to end slavery within its states, while the South could still allow slavery in that region. The act soon came under criticism as a tool to placate the slave powers of the South.