Hess's law, also known as Hess's Law of Constant Heat Summation, states that the total enthalpy change for a chemical reaction is the same, regardless of whether the reaction occurs in one step or multiple steps. In other words, the enthalpy change of a reaction is independent of the path taken from reactants to products.
Isotopomers are molecules that differ only in the isotopic composition of their atoms. They share the same molecular formula and structural arrangement, but at least one atom in the molecule has a different isotope.
Salvatore Pais is an aerospace engineer and inventor who has worked for the United States Navy. He gained attention for his involvement in projects that explore advanced technologies, including theoretical concepts for propulsion and energy systems. One of his most notable contributions is the so-called "Pais Effect," which refers to a proprietary method of generating a high-energy plasma field that could potentially be used for propulsion or other applications.
Samuel T. Durrance is a former NASA astronaut and a physicist. He was born on March 19, 1943, in New York City. Durrance flew on two Space Shuttle missions, STS-67 in 1995 and STS-83 in 1997, both of which focused on scientific research. He earned a Bachelor of Arts degree in physics from the University of Florida and later obtained a Master’s and a Ph.D.