Amedeo Avogadro solutions. Avogadro is hailed as a founder of the atomic-molecular theory. Amedeo Avogadro Amedeo Carlo Avogadro, () Count of Quaregna and Cerreto (9 August 17769 July 1856), was an Italian scientist, most noted for his contribution to molecular theory now known as Avogadro's law, which states that equal volumes of gases under the same conditions of temperature and pressure will contain equal numbers of molecules. In tribute to him, the number of elementary entities (atoms, molecules, ions or other particles) in 1 mole of a substance, , is known as the Avogadro constant, one of the seven SI base units
Status of same-sex marriage recognition of same-sex marriages performed in other states. DOMA also denied federal recognition to same-sex couples who were legally married under state law. On 26 June 2013, the U.S. Supreme Court declared Section 3 of DOMA to be unconstitutional in "United States v. Windsor". The court said that the provision was "a deprivation of the equal liberty of persons that is protected by the Fifth Amendment." With this ruling the federal government recognized same-sex marriages performed by states that allowed same-sex marriage. It also affected several federal rights, including enabling a U.S. citizen to petition a same-sex spouse for immigration.