Compounds that have the same molecular formula but different chemical structures are called isomers. Remember isomerism is a property between a pair (or more) of molecules, i.e. a molecule is an isomer of another molecule. A similar relationship is that of brother or sister...
Many Americans are up in arms. But in fact, keeping out desperate souls seeking entry into America has deep roots. On this day 100 years ago, the United States passed the strictest immigration law of its time: the Immigration Act of 1917. The law restricted the immigration of undesirables, including many people from the Middle East and Asia, through increased taxes, tests and outright bans.
Immigration Reform and Control Act of 1986. The Immigration Reform and Control Act (IRCA), Pub.L. 99â603, 100 Stat. 3445, enacted November 6, 1986, also known as the SimpsonâMazzoli Act, signed into law by Ronald Reagan on November 6, 1986, is an Act of Congress which reformed United States immigration law. The Act.