In 1811, Avogadro, an Italian physicist, advanced the hypothesis that equal volumes of gases under identical conditions of pressure and temperature contain the same number of molecules. Now one of the fundamental concepts of the atomic theory of matter, his theory has become known as Avogadro’s law. Since then, physicists have determined the number of molecules in the gram-molecular weight and found that it is the same for all gases. This number, called Avogadro’s number, is how large? Discuss
Source: The Free Dictionary
Rawlings was an American author best known for her 1938 novel The Yearling, for which she won a Pulitzer Prize. Rawlings worked as a journalist until 1928, when she moved to the rural Florida backwoods and devoted herself to fiction. There, she incorporated the people and land around her into richly atmospheric works that resemble vivid factual reporting and are noted for their magical descriptions of landscape. The Yearling is about a boy who adopts what animal as a pet? 
Leakey was a British anthropologist and archaeologist whose work helped establish the course of human evolution in Africa. The son of missionaries, Leakey grew up among the Kikuyu people of Kenya. After attending university in the UK, he returned to E Africa, where he and his wife discovered the first known remains of Homo habilis, an extinct species of hominin widely regarded as the earliest member of the human genus. Who are “Leakey’s Angels,” and what have they gone on to accomplish? 
Warhol, one of the most influential artists of the late 20th century, was the leading exponent of the pop art movement. Seeking to minimize the role of his own hand in his work, Warhol began mass-producing silkscreen paintings with the help of assistants at his studio, dubbed “the Factory.” His works, which are both popular and controversial, feature commonplace objects, such as dollar bills, soup cans, and soft-drink bottles, as well as celebrities like Marilyn Monroe. Who shot him in 1968? 
Known as “The Elephant Man,” Merrick was an Englishman who suffered from a severely disfiguring disease, mistakenly thought to have been elephantiasis, that caused growths all over his skin and bone surfaces and made it difficult for him to walk and speak. He escaped from a workhouse at 21 to join a freak show, where he was discovered by a physician who later admitted him to London Hospital. He was cared for there until his death at age 27. What rare syndrome likely caused his deformities? 
In 1835, Vuitton moved to Paris, where he became an apprentice malletier, or trunk-maker, crafting luggage for the French aristocracy. In 1854, he founded the company that would become a worldwide fashion icon. By 1885, the company had opened its first store in London. He introduced a line of innovative traveling trunks, and his designs soon became the subjects of widespread imitation—a trend that continues even today. What percent of the items bearing the Louis Vuitton monogram are counterfeit? 
Paxton was an English architect noted for his use of glass and iron in a manner that anticipated modern methods. He began his career as a landscape gardener and built two innovative greenhouses for the duke of Devonshire. These “glass houses” later served as a model for the Crystal Palace, made of iron and glass, which Paxton designed and built for the Great Exhibition of 1851. He was knighted for the success of his design. One of Paxton’s greenhouses was designed solely to house what plant? 
O’Toole, a classical stage actor, debuted in London in 1956 and has since played a variety of Shakespearean roles. Tall and handsome, he catapulted to stardom in 1962 with his portrayal of British Army officer T. E. Lawrence in the desert epic Lawrence of Arabia. He went on to win praise for performances in films ranging from historical drama to high comedy and, though he never won, has been nominated for an Academy Award eight times. Despite this record, he received what award in 2003? 
After the burning of Washington, DC, by the British in the War of 1812, Key, an American lawyer, was sent to secure the release of a friend from a British ship in Chesapeake Bay. That night, while temporarily detained on a British vessel, Key witnessed the British shelling of Fort McHenry. When he saw the American flag still flying the next morning, he was inspired to write “Defense of Fort M’Henry,” a poem that was adopted as the US national anthem in 1931. To what melody was the poem set? 
Two years after earning a degree in chemistry, Levi, an Italian Jew, was captured by the Nazis and sent to Auschwitz. He later recounted the atrocities he witnessed in autobiographical novels including If This Is a Man, which has been described as one of the most important works of the 20th century. His best known work, The Periodic Table, is a collection of 21 meditations, each named for a chemical element. What entertainer has Levi’s concentration camp number tattooed on his arm?